Finding the Fourth Proportional to 426,489.92, 639,034.68 and 145,854.08
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Solution
The fourth proportional to 426,489.92, 639,034.68 and 145,854.08 is: 218,541.66
Step by Step Solution
- Step 1: Write the proportion equation
426,489.92 : 639,034.68 = 145,854.08 : x - Step 2: Convert to fraction form
426,489.92/639,034.68 = 145,854.08/x - Step 3: Cross multiply
426,489.92x = 639,034.68 × 145,854.08 - Step 4: Simplify right side
426,489.92x = 93,205,815,339.49 - Step 5: Solve for x
x = 93,205,815,339.49/426,489.92 - Step 6: Final answer
x = 218,541.66
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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.