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Finding the Fourth Proportional to 515,566.87, 773,165.77 and 178,517.03

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Solution

The fourth proportional to 515,566.87, 773,165.77 and 178,517.03 is: 267,711.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,566.87 : 773,165.77 = 178,517.03 : x
  2. Step 2: Convert to fraction form
    515,566.87/773,165.77 = 178,517.03/x
  3. Step 3: Cross multiply
    515,566.87x = 773,165.77 × 178,517.03
  4. Step 4: Simplify right side
    515,566.87x = 138,023,257,999.16
  5. Step 5: Solve for x
    x = 138,023,257,999.16/515,566.87
  6. Step 6: Final answer
    x = 267,711.65

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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.