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Finding the Fourth Proportional to 221,679.70, 332,568.15 and 109,413.70

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Solution

The fourth proportional to 221,679.70, 332,568.15 and 109,413.70 is: 164,144.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,679.70 : 332,568.15 = 109,413.70 : x
  2. Step 2: Convert to fraction form
    221,679.70/332,568.15 = 109,413.70/x
  3. Step 3: Cross multiply
    221,679.70x = 332,568.15 × 109,413.70
  4. Step 4: Simplify right side
    221,679.70x = 36,387,511,793.66
  5. Step 5: Solve for x
    x = 36,387,511,793.66/221,679.70
  6. Step 6: Final answer
    x = 164,144.54

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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.