Home / 221,027.20-331,540.79-80,785.82

Finding the Fourth Proportional to 221,027.20, 331,540.79 and 80,785.82

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Solution

The fourth proportional to 221,027.20, 331,540.79 and 80,785.82 is: 121,178.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,027.20 : 331,540.79 = 80,785.82 : x
  2. Step 2: Convert to fraction form
    221,027.20/331,540.79 = 80,785.82/x
  3. Step 3: Cross multiply
    221,027.20x = 331,540.79 × 80,785.82
  4. Step 4: Simplify right side
    221,027.20x = 26,783,794,179.67
  5. Step 5: Solve for x
    x = 26,783,794,179.67/221,027.20
  6. Step 6: Final answer
    x = 121,178.73

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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.