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Finding the Fourth Proportional to 324,812.96, 487,259.04 and 137,761.28

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Solution

The fourth proportional to 324,812.96, 487,259.04 and 137,761.28 is: 206,658.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,812.96 : 487,259.04 = 137,761.28 : x
  2. Step 2: Convert to fraction form
    324,812.96/487,259.04 = 137,761.28/x
  3. Step 3: Cross multiply
    324,812.96x = 487,259.04 × 137,761.28
  4. Step 4: Simplify right side
    324,812.96x = 67,125,429,041.97
  5. Step 5: Solve for x
    x = 67,125,429,041.97/324,812.96
  6. Step 6: Final answer
    x = 206,658.72

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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.