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Finding the Fourth Proportional to 394,663.92, 544,272.78 and 258,648.31

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Solution

The fourth proportional to 394,663.92, 544,272.78 and 258,648.31 is: 356,696.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,663.92 : 544,272.78 = 258,648.31 : x
  2. Step 2: Convert to fraction form
    394,663.92/544,272.78 = 258,648.31/x
  3. Step 3: Cross multiply
    394,663.92x = 544,272.78 × 258,648.31
  4. Step 4: Simplify right side
    394,663.92x = 140,775,234,726.00
  5. Step 5: Solve for x
    x = 140,775,234,726.00/394,663.92
  6. Step 6: Final answer
    x = 356,696.49

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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.