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Finding the Fourth Proportional to 263,260.89, 394,932.42 and 85,726.11

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Solution

The fourth proportional to 263,260.89, 394,932.42 and 85,726.11 is: 128,602.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,260.89 : 394,932.42 = 85,726.11 : x
  2. Step 2: Convert to fraction form
    263,260.89/394,932.42 = 85,726.11/x
  3. Step 3: Cross multiply
    263,260.89x = 394,932.42 × 85,726.11
  4. Step 4: Simplify right side
    263,260.89x = 33,856,020,079.49
  5. Step 5: Solve for x
    x = 33,856,020,079.49/263,260.89
  6. Step 6: Final answer
    x = 128,602.54

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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.