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Finding the Fourth Proportional to 267,658.11, 401,487.75 and 90,289.62

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Solution

The fourth proportional to 267,658.11, 401,487.75 and 90,289.62 is: 135,434.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,658.11 : 401,487.75 = 90,289.62 : x
  2. Step 2: Convert to fraction form
    267,658.11/401,487.75 = 90,289.62/x
  3. Step 3: Cross multiply
    267,658.11x = 401,487.75 × 90,289.62
  4. Step 4: Simplify right side
    267,658.11x = 36,250,176,382.16
  5. Step 5: Solve for x
    x = 36,250,176,382.16/267,658.11
  6. Step 6: Final answer
    x = 135,434.63

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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.