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Finding the Fourth Proportional to 267,745, 401,618.88 and 90,253.56

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Solution

The fourth proportional to 267,745, 401,618.88 and 90,253.56 is: 135,380.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,745 : 401,618.88 = 90,253.56 : x
  2. Step 2: Convert to fraction form
    267,745/401,618.88 = 90,253.56/x
  3. Step 3: Cross multiply
    267,745x = 401,618.88 × 90,253.56
  4. Step 4: Simplify right side
    267,745x = 36,247,533,683.21
  5. Step 5: Solve for x
    x = 36,247,533,683.21/267,745
  6. Step 6: Final answer
    x = 135,380.81

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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.