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Finding the Fourth Proportional to 267,489.80, 401,105.10 and 149,035.40

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Solution

The fourth proportional to 267,489.80, 401,105.10 and 149,035.40 is: 223,480.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,489.80 : 401,105.10 = 149,035.40 : x
  2. Step 2: Convert to fraction form
    267,489.80/401,105.10 = 149,035.40/x
  3. Step 3: Cross multiply
    267,489.80x = 401,105.10 × 149,035.40
  4. Step 4: Simplify right side
    267,489.80x = 59,778,859,020.54
  5. Step 5: Solve for x
    x = 59,778,859,020.54/267,489.80
  6. Step 6: Final answer
    x = 223,480.89

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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.