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Finding the Fourth Proportional to 267,433.20, 401,149.80 and 89,921.70

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Solution

The fourth proportional to 267,433.20, 401,149.80 and 89,921.70 is: 134,882.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,433.20 : 401,149.80 = 89,921.70 : x
  2. Step 2: Convert to fraction form
    267,433.20/401,149.80 = 89,921.70/x
  3. Step 3: Cross multiply
    267,433.20x = 401,149.80 × 89,921.70
  4. Step 4: Simplify right side
    267,433.20x = 36,072,071,970.66
  5. Step 5: Solve for x
    x = 36,072,071,970.66/267,433.20
  6. Step 6: Final answer
    x = 134,882.55

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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.