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Finding the Fourth Proportional to 359,750, 539,651.16 and 138,134

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Solution

The fourth proportional to 359,750, 539,651.16 and 138,134 is: 207,211.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,750 : 539,651.16 = 138,134 : x
  2. Step 2: Convert to fraction form
    359,750/539,651.16 = 138,134/x
  3. Step 3: Cross multiply
    359,750x = 539,651.16 × 138,134
  4. Step 4: Simplify right side
    359,750x = 74,544,173,335.44
  5. Step 5: Solve for x
    x = 74,544,173,335.44/359,750
  6. Step 6: Final answer
    x = 207,211.04

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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.