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Finding the Fourth Proportional to 267,921.70, 401,736.55 and 80,908.90

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Solution

The fourth proportional to 267,921.70, 401,736.55 and 80,908.90 is: 121,319.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,921.70 : 401,736.55 = 80,908.90 : x
  2. Step 2: Convert to fraction form
    267,921.70/401,736.55 = 80,908.90/x
  3. Step 3: Cross multiply
    267,921.70x = 401,736.55 × 80,908.90
  4. Step 4: Simplify right side
    267,921.70x = 32,504,062,350.30
  5. Step 5: Solve for x
    x = 32,504,062,350.30/267,921.70
  6. Step 6: Final answer
    x = 121,319.26

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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.