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Finding the Fourth Proportional to 359,845.20, 539,767.80 and 344,487.60

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Solution

The fourth proportional to 359,845.20, 539,767.80 and 344,487.60 is: 516,731.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,845.20 : 539,767.80 = 344,487.60 : x
  2. Step 2: Convert to fraction form
    359,845.20/539,767.80 = 344,487.60/x
  3. Step 3: Cross multiply
    359,845.20x = 539,767.80 × 344,487.60
  4. Step 4: Simplify right side
    359,845.20x = 185,943,313,979.28
  5. Step 5: Solve for x
    x = 185,943,313,979.28/359,845.20
  6. Step 6: Final answer
    x = 516,731.40

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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.