Finding the Fourth Proportional to 378,486.49, 567,781.99 and 138,568.95
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Solution
The fourth proportional to 378,486.49, 567,781.99 and 138,568.95 is: 207,872.56
Step by Step Solution
- Step 1: Write the proportion equation
378,486.49 : 567,781.99 = 138,568.95 : x - Step 2: Convert to fraction form
378,486.49/567,781.99 = 138,568.95/x - Step 3: Cross multiply
378,486.49x = 567,781.99 × 138,568.95 - Step 4: Simplify right side
378,486.49x = 78,676,954,183.21 - Step 5: Solve for x
x = 78,676,954,183.21/378,486.49 - Step 6: Final answer
x = 207,872.56
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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.