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Finding the Fourth Proportional to 488,505.60, 732,499.20 and 172,972.80

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Solution

The fourth proportional to 488,505.60, 732,499.20 and 172,972.80 is: 259,367.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,505.60 : 732,499.20 = 172,972.80 : x
  2. Step 2: Convert to fraction form
    488,505.60/732,499.20 = 172,972.80/x
  3. Step 3: Cross multiply
    488,505.60x = 732,499.20 × 172,972.80
  4. Step 4: Simplify right side
    488,505.60x = 126,702,437,621.76
  5. Step 5: Solve for x
    x = 126,702,437,621.76/488,505.60
  6. Step 6: Final answer
    x = 259,367.42

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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.