Finding the Fourth Proportional to 437,939.12, 656,909.28 and 105,515.12
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Solution
The fourth proportional to 437,939.12, 656,909.28 and 105,515.12 is: 158,272.82
Step by Step Solution
- Step 1: Write the proportion equation
437,939.12 : 656,909.28 = 105,515.12 : x - Step 2: Convert to fraction form
437,939.12/656,909.28 = 105,515.12/x - Step 3: Cross multiply
437,939.12x = 656,909.28 × 105,515.12 - Step 4: Simplify right side
437,939.12x = 69,313,861,508.31 - Step 5: Solve for x
x = 69,313,861,508.31/437,939.12 - Step 6: Final answer
x = 158,272.82
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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.