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Finding the Fourth Proportional to 215,586.47, 323,379.71 and 82,507.52

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Solution

The fourth proportional to 215,586.47, 323,379.71 and 82,507.52 is: 123,761.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,586.47 : 323,379.71 = 82,507.52 : x
  2. Step 2: Convert to fraction form
    215,586.47/323,379.71 = 82,507.52/x
  3. Step 3: Cross multiply
    215,586.47x = 323,379.71 × 82,507.52
  4. Step 4: Simplify right side
    215,586.47x = 26,681,257,890.42
  5. Step 5: Solve for x
    x = 26,681,257,890.42/215,586.47
  6. Step 6: Final answer
    x = 123,761.28

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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.