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Finding the Fourth Proportional to 359,675.90, 539,470.80 and 279,793.68

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Solution

The fourth proportional to 359,675.90, 539,470.80 and 279,793.68 is: 419,657.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,675.90 : 539,470.80 = 279,793.68 : x
  2. Step 2: Convert to fraction form
    359,675.90/539,470.80 = 279,793.68/x
  3. Step 3: Cross multiply
    359,675.90x = 539,470.80 × 279,793.68
  4. Step 4: Simplify right side
    359,675.90x = 150,940,516,288.22
  5. Step 5: Solve for x
    x = 150,940,516,288.22/359,675.90
  6. Step 6: Final answer
    x = 419,657.02

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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.