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Finding the Fourth Proportional to 359,451.78, 539,246.79 and 137,818.50

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Solution

The fourth proportional to 359,451.78, 539,246.79 and 137,818.50 is: 206,754.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,451.78 : 539,246.79 = 137,818.50 : x
  2. Step 2: Convert to fraction form
    359,451.78/539,246.79 = 137,818.50/x
  3. Step 3: Cross multiply
    359,451.78x = 539,246.79 × 137,818.50
  4. Step 4: Simplify right side
    359,451.78x = 74,318,183,727.62
  5. Step 5: Solve for x
    x = 74,318,183,727.62/359,451.78
  6. Step 6: Final answer
    x = 206,754.25

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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.