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Finding the Fourth Proportional to 394,793.20, 544,828.80 and 224,999.92

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Solution

The fourth proportional to 394,793.20, 544,828.80 and 224,999.92 is: 310,507.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,793.20 : 544,828.80 = 224,999.92 : x
  2. Step 2: Convert to fraction form
    394,793.20/544,828.80 = 224,999.92/x
  3. Step 3: Cross multiply
    394,793.20x = 544,828.80 × 224,999.92
  4. Step 4: Simplify right side
    394,793.20x = 122,586,436,413.70
  5. Step 5: Solve for x
    x = 122,586,436,413.70/394,793.20
  6. Step 6: Final answer
    x = 310,507.97

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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.