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Finding the Fourth Proportional to 267,092.80, 400,639.20 and 80,104.30

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Solution

The fourth proportional to 267,092.80, 400,639.20 and 80,104.30 is: 120,156.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,092.80 : 400,639.20 = 80,104.30 : x
  2. Step 2: Convert to fraction form
    267,092.80/400,639.20 = 80,104.30/x
  3. Step 3: Cross multiply
    267,092.80x = 400,639.20 × 80,104.30
  4. Step 4: Simplify right side
    267,092.80x = 32,092,922,668.56
  5. Step 5: Solve for x
    x = 32,092,922,668.56/267,092.80
  6. Step 6: Final answer
    x = 120,156.45

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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.