Home / 220,806.64-331,215.40-80,565.24

Finding the Fourth Proportional to 220,806.64, 331,215.40 and 80,565.24

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Solution

The fourth proportional to 220,806.64, 331,215.40 and 80,565.24 is: 120,849.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,806.64 : 331,215.40 = 80,565.24 : x
  2. Step 2: Convert to fraction form
    220,806.64/331,215.40 = 80,565.24/x
  3. Step 3: Cross multiply
    220,806.64x = 331,215.40 × 80,565.24
  4. Step 4: Simplify right side
    220,806.64x = 26,684,448,192.70
  5. Step 5: Solve for x
    x = 26,684,448,192.70/220,806.64
  6. Step 6: Final answer
    x = 120,849.84

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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.