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Finding the Fourth Proportional to 639,751.28, 959,762.24 and 240,395.52

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Solution

The fourth proportional to 639,751.28, 959,762.24 and 240,395.52 is: 360,644.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,751.28 : 959,762.24 = 240,395.52 : x
  2. Step 2: Convert to fraction form
    639,751.28/959,762.24 = 240,395.52/x
  3. Step 3: Cross multiply
    639,751.28x = 959,762.24 × 240,395.52
  4. Step 4: Simplify right side
    639,751.28x = 230,722,542,761.17
  5. Step 5: Solve for x
    x = 230,722,542,761.17/639,751.28
  6. Step 6: Final answer
    x = 360,644.13

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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.