Find the missing number having the same relationship as between the numbers on the left side two numbers: 125 : 120 :: 343 : ?

340 338 337 336

336

The correct answer is Option (4) → 336 \( {5}^{2} \) × 5 :  ( \( {5}^{2} \) - 1) × 5 125 : 120 \( {7}^{2} \) × 7 :  ( \( {7}^{2} \) - 1) × 7  343 : 336