Finding the Fourth Proportional to 638,854.09, 958,073.70 and 212,275.38
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Solution
The fourth proportional to 638,854.09, 958,073.70 and 212,275.38 is: 318,344.15
Step by Step Solution
- Step 1: Write the proportion equation
638,854.09 : 958,073.70 = 212,275.38 : x - Step 2: Convert to fraction form
638,854.09/958,073.70 = 212,275.38/x - Step 3: Cross multiply
638,854.09x = 958,073.70 × 212,275.38 - Step 4: Simplify right side
638,854.09x = 203,375,461,333.24 - Step 5: Solve for x
x = 203,375,461,333.24/638,854.09 - Step 6: Final answer
x = 318,344.15
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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.