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Finding the Fourth Proportional to 222,142.80, 306,565.20 and 126,648.48

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Solution

The fourth proportional to 222,142.80, 306,565.20 and 126,648.48 is: 174,779.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,142.80 : 306,565.20 = 126,648.48 : x
  2. Step 2: Convert to fraction form
    222,142.80/306,565.20 = 126,648.48/x
  3. Step 3: Cross multiply
    222,142.80x = 306,565.20 × 126,648.48
  4. Step 4: Simplify right side
    222,142.80x = 38,826,016,600.90
  5. Step 5: Solve for x
    x = 38,826,016,600.90/222,142.80
  6. Step 6: Final answer
    x = 174,779.54

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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.