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Finding the Fourth Proportional to 359,979.60, 539,969.08 and 110,661.20

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Solution

The fourth proportional to 359,979.60, 539,969.08 and 110,661.20 is: 165,991.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,979.60 : 539,969.08 = 110,661.20 : x
  2. Step 2: Convert to fraction form
    359,979.60/539,969.08 = 110,661.20/x
  3. Step 3: Cross multiply
    359,979.60x = 539,969.08 × 110,661.20
  4. Step 4: Simplify right side
    359,979.60x = 59,753,626,355.70
  5. Step 5: Solve for x
    x = 59,753,626,355.70/359,979.60
  6. Step 6: Final answer
    x = 165,991.70

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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.