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Finding the Fourth Proportional to 220,611.30, 331,317.90 and 132,037.80

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Solution

The fourth proportional to 220,611.30, 331,317.90 and 132,037.80 is: 198,296.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,611.30 : 331,317.90 = 132,037.80 : x
  2. Step 2: Convert to fraction form
    220,611.30/331,317.90 = 132,037.80/x
  3. Step 3: Cross multiply
    220,611.30x = 331,317.90 × 132,037.80
  4. Step 4: Simplify right side
    220,611.30x = 43,746,486,616.62
  5. Step 5: Solve for x
    x = 43,746,486,616.62/220,611.30
  6. Step 6: Final answer
    x = 198,296.67

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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.