Finding the Fourth Proportional to 316,135.76, 474,138.84 and 138,544.88
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Solution
The fourth proportional to 316,135.76, 474,138.84 and 138,544.88 is: 207,788.92
Step by Step Solution
- Step 1: Write the proportion equation
316,135.76 : 474,138.84 = 138,544.88 : x - Step 2: Convert to fraction form
316,135.76/474,138.84 = 138,544.88/x - Step 3: Cross multiply
316,135.76x = 474,138.84 × 138,544.88 - Step 4: Simplify right side
316,135.76x = 65,689,508,691.14 - Step 5: Solve for x
x = 65,689,508,691.14/316,135.76 - Step 6: Final answer
x = 207,788.92
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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.