Home / 220,631.28-331,056.27-87,508.68

Finding the Fourth Proportional to 220,631.28, 331,056.27 and 87,508.68

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Solution

The fourth proportional to 220,631.28, 331,056.27 and 87,508.68 is: 131,306.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,631.28 : 331,056.27 = 87,508.68 : x
  2. Step 2: Convert to fraction form
    220,631.28/331,056.27 = 87,508.68/x
  3. Step 3: Cross multiply
    220,631.28x = 331,056.27 × 87,508.68
  4. Step 4: Simplify right side
    220,631.28x = 28,970,297,193.42
  5. Step 5: Solve for x
    x = 28,970,297,193.42/220,631.28
  6. Step 6: Final answer
    x = 131,306.39

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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.