Finding the Fourth Proportional to 247,715.20, 371,572.80 and 129,617.20
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Solution
The fourth proportional to 247,715.20, 371,572.80 and 129,617.20 is: 194,425.80
Step by Step Solution
- Step 1: Write the proportion equation
247,715.20 : 371,572.80 = 129,617.20 : x - Step 2: Convert to fraction form
247,715.20/371,572.80 = 129,617.20/x - Step 3: Cross multiply
247,715.20x = 371,572.80 × 129,617.20 - Step 4: Simplify right side
247,715.20x = 48,162,225,932.16 - Step 5: Solve for x
x = 48,162,225,932.16/247,715.20 - Step 6: Final answer
x = 194,425.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.