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Finding the Fourth Proportional to 221,747.61, 332,616.71 and 71,987.69

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Solution

The fourth proportional to 221,747.61, 332,616.71 and 71,987.69 is: 107,980.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,747.61 : 332,616.71 = 71,987.69 : x
  2. Step 2: Convert to fraction form
    221,747.61/332,616.71 = 71,987.69/x
  3. Step 3: Cross multiply
    221,747.61x = 332,616.71 × 71,987.69
  4. Step 4: Simplify right side
    221,747.61x = 23,944,306,585.28
  5. Step 5: Solve for x
    x = 23,944,306,585.28/221,747.61
  6. Step 6: Final answer
    x = 107,980.00

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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.