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Finding the Fourth Proportional to 267,861.64, 401,806.86 and 80,868.28

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Solution

The fourth proportional to 267,861.64, 401,806.86 and 80,868.28 is: 121,306.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,861.64 : 401,806.86 = 80,868.28 : x
  2. Step 2: Convert to fraction form
    267,861.64/401,806.86 = 80,868.28/x
  3. Step 3: Cross multiply
    267,861.64x = 401,806.86 × 80,868.28
  4. Step 4: Simplify right side
    267,861.64x = 32,493,429,660.40
  5. Step 5: Solve for x
    x = 32,493,429,660.40/267,861.64
  6. Step 6: Final answer
    x = 121,306.77

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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.