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Finding the Fourth Proportional to 221,889.56, 332,917.48 and 115,206.92

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Solution

The fourth proportional to 221,889.56, 332,917.48 and 115,206.92 is: 172,853.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,889.56 : 332,917.48 = 115,206.92 : x
  2. Step 2: Convert to fraction form
    221,889.56/332,917.48 = 115,206.92/x
  3. Step 3: Cross multiply
    221,889.56x = 332,917.48 × 115,206.92
  4. Step 4: Simplify right side
    221,889.56x = 38,354,397,484.96
  5. Step 5: Solve for x
    x = 38,354,397,484.96/221,889.56
  6. Step 6: Final answer
    x = 172,853.55

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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.