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Finding the Fourth Proportional to 221,668.40, 332,502.60 and 132,876.20

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Solution

The fourth proportional to 221,668.40, 332,502.60 and 132,876.20 is: 199,314.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,668.40 : 332,502.60 = 132,876.20 : x
  2. Step 2: Convert to fraction form
    221,668.40/332,502.60 = 132,876.20/x
  3. Step 3: Cross multiply
    221,668.40x = 332,502.60 × 132,876.20
  4. Step 4: Simplify right side
    221,668.40x = 44,181,681,978.12
  5. Step 5: Solve for x
    x = 44,181,681,978.12/221,668.40
  6. Step 6: Final answer
    x = 199,314.30

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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.