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Finding the Fourth Proportional to 204,757.47, 307,179.95 and 71,642.07

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Solution

The fourth proportional to 204,757.47, 307,179.95 and 71,642.07 is: 107,478.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,757.47 : 307,179.95 = 71,642.07 : x
  2. Step 2: Convert to fraction form
    204,757.47/307,179.95 = 71,642.07/x
  3. Step 3: Cross multiply
    204,757.47x = 307,179.95 × 71,642.07
  4. Step 4: Simplify right side
    204,757.47x = 22,007,007,122.29
  5. Step 5: Solve for x
    x = 22,007,007,122.29/204,757.47
  6. Step 6: Final answer
    x = 107,478.41

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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.