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Finding the Fourth Proportional to 266,023.90, 399,072.30 and 88,512.40

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Solution

The fourth proportional to 266,023.90, 399,072.30 and 88,512.40 is: 132,780.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,023.90 : 399,072.30 = 88,512.40 : x
  2. Step 2: Convert to fraction form
    266,023.90/399,072.30 = 88,512.40/x
  3. Step 3: Cross multiply
    266,023.90x = 399,072.30 × 88,512.40
  4. Step 4: Simplify right side
    266,023.90x = 35,322,847,046.52
  5. Step 5: Solve for x
    x = 35,322,847,046.52/266,023.90
  6. Step 6: Final answer
    x = 132,780.73

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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.