Home / 220,806.30-331,258.32-80,564.52

Finding the Fourth Proportional to 220,806.30, 331,258.32 and 80,564.52

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Solution

The fourth proportional to 220,806.30, 331,258.32 and 80,564.52 is: 120,864.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,806.30 : 331,258.32 = 80,564.52 : x
  2. Step 2: Convert to fraction form
    220,806.30/331,258.32 = 80,564.52/x
  3. Step 3: Cross multiply
    220,806.30x = 331,258.32 × 80,564.52
  4. Step 4: Simplify right side
    220,806.30x = 26,687,667,546.81
  5. Step 5: Solve for x
    x = 26,687,667,546.81/220,806.30
  6. Step 6: Final answer
    x = 120,864.61

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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.