Home / 220,854.17-331,286.70-80,612.75

Finding the Fourth Proportional to 220,854.17, 331,286.70 and 80,612.75

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Solution

The fourth proportional to 220,854.17, 331,286.70 and 80,612.75 is: 120,921.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,854.17 : 331,286.70 = 80,612.75 : x
  2. Step 2: Convert to fraction form
    220,854.17/331,286.70 = 80,612.75/x
  3. Step 3: Cross multiply
    220,854.17x = 331,286.70 × 80,612.75
  4. Step 4: Simplify right side
    220,854.17x = 26,705,931,925.43
  5. Step 5: Solve for x
    x = 26,705,931,925.43/220,854.17
  6. Step 6: Final answer
    x = 120,921.11

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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.