Home / 220,806.13-331,214.66-80,564.75

Finding the Fourth Proportional to 220,806.13, 331,214.66 and 80,564.75

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Solution

The fourth proportional to 220,806.13, 331,214.66 and 80,564.75 is: 120,849.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,806.13 : 331,214.66 = 80,564.75 : x
  2. Step 2: Convert to fraction form
    220,806.13/331,214.66 = 80,564.75/x
  3. Step 3: Cross multiply
    220,806.13x = 331,214.66 × 80,564.75
  4. Step 4: Simplify right side
    220,806.13x = 26,684,226,279.24
  5. Step 5: Solve for x
    x = 26,684,226,279.24/220,806.13
  6. Step 6: Final answer
    x = 120,849.12

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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.