Finding the Fourth Proportional to 318,634.79, 439,715.97 and 173,441.13
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Solution
The fourth proportional to 318,634.79, 439,715.97 and 173,441.13 is: 239,348.74
Step by Step Solution
- Step 1: Write the proportion equation
318,634.79 : 439,715.97 = 173,441.13 : x - Step 2: Convert to fraction form
318,634.79/439,715.97 = 173,441.13/x - Step 3: Cross multiply
318,634.79x = 439,715.97 × 173,441.13 - Step 4: Simplify right side
318,634.79x = 76,264,834,715.85 - Step 5: Solve for x
x = 76,264,834,715.85/318,634.79 - Step 6: Final answer
x = 239,348.74
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.