Finding the Fourth Proportional to 425,939.76, 638,841.92 and 141,606.68
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Solution
The fourth proportional to 425,939.76, 638,841.92 and 141,606.68 is: 212,387.50
Step by Step Solution
- Step 1: Write the proportion equation
425,939.76 : 638,841.92 = 141,606.68 : x - Step 2: Convert to fraction form
425,939.76/638,841.92 = 141,606.68/x - Step 3: Cross multiply
425,939.76x = 638,841.92 × 141,606.68 - Step 4: Simplify right side
425,939.76x = 90,464,279,433.78 - Step 5: Solve for x
x = 90,464,279,433.78/425,939.76 - Step 6: Final answer
x = 212,387.50
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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.