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Finding the Fourth Proportional to 515,566.86, 773,165.79 and 178,517.01

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Solution

The fourth proportional to 515,566.86, 773,165.79 and 178,517.01 is: 267,711.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,566.86 : 773,165.79 = 178,517.01 : x
  2. Step 2: Convert to fraction form
    515,566.86/773,165.79 = 178,517.01/x
  3. Step 3: Cross multiply
    515,566.86x = 773,165.79 × 178,517.01
  4. Step 4: Simplify right side
    515,566.86x = 138,023,247,964.46
  5. Step 5: Solve for x
    x = 138,023,247,964.46/515,566.86
  6. Step 6: Final answer
    x = 267,711.64

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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.