Home / 220,827.20-331,246.20-80,585.78

Finding the Fourth Proportional to 220,827.20, 331,246.20 and 80,585.78

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Solution

The fourth proportional to 220,827.20, 331,246.20 and 80,585.78 is: 120,880.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,827.20 : 331,246.20 = 80,585.78 : x
  2. Step 2: Convert to fraction form
    220,827.20/331,246.20 = 80,585.78/x
  3. Step 3: Cross multiply
    220,827.20x = 331,246.20 × 80,585.78
  4. Step 4: Simplify right side
    220,827.20x = 26,693,733,399.04
  5. Step 5: Solve for x
    x = 26,693,733,399.04/220,827.20
  6. Step 6: Final answer
    x = 120,880.64

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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.