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Finding the Fourth Proportional to 215,892.89, 323,700.76 and 89,620.30

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Solution

The fourth proportional to 215,892.89, 323,700.76 and 89,620.30 is: 134,372.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,892.89 : 323,700.76 = 89,620.30 : x
  2. Step 2: Convert to fraction form
    215,892.89/323,700.76 = 89,620.30/x
  3. Step 3: Cross multiply
    215,892.89x = 323,700.76 × 89,620.30
  4. Step 4: Simplify right side
    215,892.89x = 29,010,158,323.56
  5. Step 5: Solve for x
    x = 29,010,158,323.56/215,892.89
  6. Step 6: Final answer
    x = 134,372.92

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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.