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Finding the Fourth Proportional to 515,566.71, 773,165.53 and 178,516.87

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Solution

The fourth proportional to 515,566.71, 773,165.53 and 178,516.87 is: 267,711.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,566.71 : 773,165.53 = 178,516.87 : x
  2. Step 2: Convert to fraction form
    515,566.71/773,165.53 = 178,516.87/x
  3. Step 3: Cross multiply
    515,566.71x = 773,165.53 × 178,516.87
  4. Step 4: Simplify right side
    515,566.71x = 138,023,090,407.49
  5. Step 5: Solve for x
    x = 138,023,090,407.49/515,566.71
  6. Step 6: Final answer
    x = 267,711.41

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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.