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Finding the Fourth Proportional to 267,687.63, 401,449.41 and 90,146.97

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Solution

The fourth proportional to 267,687.63, 401,449.41 and 90,146.97 is: 135,192.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,687.63 : 401,449.41 = 90,146.97 : x
  2. Step 2: Convert to fraction form
    267,687.63/401,449.41 = 90,146.97/x
  3. Step 3: Cross multiply
    267,687.63x = 401,449.41 × 90,146.97
  4. Step 4: Simplify right side
    267,687.63x = 36,189,447,919.79
  5. Step 5: Solve for x
    x = 36,189,447,919.79/267,687.63
  6. Step 6: Final answer
    x = 135,192.83

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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.