Complete the number analogy: 149 : 238 :: 159 : ?

Introduction / Context:
We determine the rule that maps 149 to 238, then apply it to 159 to find the unknown value.

Given Data / Assumptions:
149 → 238 implies an additive increment of 89 (238 − 149 = 89). We assume the same increment applies in the second pair.

Concept / Approach:
Constant-difference mappings are common in two-step analogies when only one example is provided on the left. Using +89 on 159 should yield the answer if the rule is consistent.

Step-by-Step Solution:

Verification / Alternative check:
Other operations (e.g., fixed ratio) do not align as cleanly with 149 → 238.

Why Other Options Are Wrong:
They correspond to different increments that do not match the left-hand mapping.

Common Pitfalls:
Searching for a complicated digit-function when a simple constant increment fits.

Final Answer:
248