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Finding the Fourth Proportional to 215,745.58, 323,665.08 and 82,625.86

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Solution

The fourth proportional to 215,745.58, 323,665.08 and 82,625.86 is: 123,956.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,745.58 : 323,665.08 = 82,625.86 : x
  2. Step 2: Convert to fraction form
    215,745.58/323,665.08 = 82,625.86/x
  3. Step 3: Cross multiply
    215,745.58x = 323,665.08 × 82,625.86
  4. Step 4: Simplify right side
    215,745.58x = 26,743,105,586.97
  5. Step 5: Solve for x
    x = 26,743,105,586.97/215,745.58
  6. Step 6: Final answer
    x = 123,956.68

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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.