Finding the Fourth Proportional to 420,363.20, 580,115.22 and 229,387.07
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Solution
The fourth proportional to 420,363.20, 580,115.22 and 229,387.07 is: 316,561.80
Step by Step Solution
- Step 1: Write the proportion equation
420,363.20 : 580,115.22 = 229,387.07 : x - Step 2: Convert to fraction form
420,363.20/580,115.22 = 229,387.07/x - Step 3: Cross multiply
420,363.20x = 580,115.22 × 229,387.07 - Step 4: Simplify right side
420,363.20x = 133,070,930,578.21 - Step 5: Solve for x
x = 133,070,930,578.21/420,363.20 - Step 6: Final answer
x = 316,561.80
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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.