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Finding the Fourth Proportional to 392,726.22, 541,960.82 and 220,648.61

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Solution

The fourth proportional to 392,726.22, 541,960.82 and 220,648.61 is: 304,494.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,726.22 : 541,960.82 = 220,648.61 : x
  2. Step 2: Convert to fraction form
    392,726.22/541,960.82 = 220,648.61/x
  3. Step 3: Cross multiply
    392,726.22x = 541,960.82 × 220,648.61
  4. Step 4: Simplify right side
    392,726.22x = 119,582,900,879.17
  5. Step 5: Solve for x
    x = 119,582,900,879.17/392,726.22
  6. Step 6: Final answer
    x = 304,494.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.