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Finding the Fourth Proportional to 515,569.32, 773,169.44 and 178,519.46

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Solution

The fourth proportional to 515,569.32, 773,169.44 and 178,519.46 is: 267,715.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,569.32 : 773,169.44 = 178,519.46 : x
  2. Step 2: Convert to fraction form
    515,569.32/773,169.44 = 178,519.46/x
  3. Step 3: Cross multiply
    515,569.32x = 773,169.44 × 178,519.46
  4. Step 4: Simplify right side
    515,569.32x = 138,025,789,727.69
  5. Step 5: Solve for x
    x = 138,025,789,727.69/515,569.32
  6. Step 6: Final answer
    x = 267,715.29

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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.