Finding the Fourth Proportional to 386,070.20, 579,134.10 and 136,719.80
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Solution
The fourth proportional to 386,070.20, 579,134.10 and 136,719.80 is: 205,089.90
Step by Step Solution
- Step 1: Write the proportion equation
386,070.20 : 579,134.10 = 136,719.80 : x - Step 2: Convert to fraction form
386,070.20/579,134.10 = 136,719.80/x - Step 3: Cross multiply
386,070.20x = 579,134.10 × 136,719.80 - Step 4: Simplify right side
386,070.20x = 79,179,098,325.18 - Step 5: Solve for x
x = 79,179,098,325.18/386,070.20 - Step 6: Final answer
x = 205,089.90
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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.