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Finding the Fourth Proportional to 221,679.20, 332,567.40 and 109,413.20

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Solution

The fourth proportional to 221,679.20, 332,567.40 and 109,413.20 is: 164,143.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,679.20 : 332,567.40 = 109,413.20 : x
  2. Step 2: Convert to fraction form
    221,679.20/332,567.40 = 109,413.20/x
  3. Step 3: Cross multiply
    221,679.20x = 332,567.40 × 109,413.20
  4. Step 4: Simplify right side
    221,679.20x = 36,387,263,449.68
  5. Step 5: Solve for x
    x = 36,387,263,449.68/221,679.20
  6. Step 6: Final answer
    x = 164,143.79

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1.5x scale

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.