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Finding the Fourth Proportional to 257,504.11, 386,273.15 and 89,040.73

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Solution

The fourth proportional to 257,504.11, 386,273.15 and 89,040.73 is: 133,566.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,504.11 : 386,273.15 = 89,040.73 : x
  2. Step 2: Convert to fraction form
    257,504.11/386,273.15 = 89,040.73/x
  3. Step 3: Cross multiply
    257,504.11x = 386,273.15 × 89,040.73
  4. Step 4: Simplify right side
    257,504.11x = 34,394,043,255.40
  5. Step 5: Solve for x
    x = 34,394,043,255.40/257,504.11
  6. Step 6: Final answer
    x = 133,566.97

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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.