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Finding the Fourth Proportional to 359,817.87, 539,449.38 and 135,173.55

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Solution

The fourth proportional to 359,817.87, 539,449.38 and 135,173.55 is: 202,656.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,817.87 : 539,449.38 = 135,173.55 : x
  2. Step 2: Convert to fraction form
    359,817.87/539,449.38 = 135,173.55/x
  3. Step 3: Cross multiply
    359,817.87x = 539,449.38 × 135,173.55
  4. Step 4: Simplify right side
    359,817.87x = 72,919,287,739.90
  5. Step 5: Solve for x
    x = 72,919,287,739.90/359,817.87
  6. Step 6: Final answer
    x = 202,656.10

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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.