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Finding the Fourth Proportional to 267,735.78, 401,348.52 and 90,151.38

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Solution

The fourth proportional to 267,735.78, 401,348.52 and 90,151.38 is: 135,141.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,735.78 : 401,348.52 = 90,151.38 : x
  2. Step 2: Convert to fraction form
    267,735.78/401,348.52 = 90,151.38/x
  3. Step 3: Cross multiply
    267,735.78x = 401,348.52 × 90,151.38
  4. Step 4: Simplify right side
    267,735.78x = 36,182,122,938.96
  5. Step 5: Solve for x
    x = 36,182,122,938.96/267,735.78
  6. Step 6: Final answer
    x = 135,141.16

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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.