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Finding the Fourth Proportional to 262,726.59, 394,145.26 and 85,219.79

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Solution

The fourth proportional to 262,726.59, 394,145.26 and 85,219.79 is: 127,847.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,726.59 : 394,145.26 = 85,219.79 : x
  2. Step 2: Convert to fraction form
    262,726.59/394,145.26 = 85,219.79/x
  3. Step 3: Cross multiply
    262,726.59x = 394,145.26 × 85,219.79
  4. Step 4: Simplify right side
    262,726.59x = 33,588,976,286.70
  5. Step 5: Solve for x
    x = 33,588,976,286.70/262,726.59
  6. Step 6: Final answer
    x = 127,847.65

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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.