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Finding the Fourth Proportional to 220,506.29, 330,868.78 and 87,383.60

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Solution

The fourth proportional to 220,506.29, 330,868.78 and 87,383.60 is: 131,118.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,506.29 : 330,868.78 = 87,383.60 : x
  2. Step 2: Convert to fraction form
    220,506.29/330,868.78 = 87,383.60/x
  3. Step 3: Cross multiply
    220,506.29x = 330,868.78 × 87,383.60
  4. Step 4: Simplify right side
    220,506.29x = 28,912,505,124.01
  5. Step 5: Solve for x
    x = 28,912,505,124.01/220,506.29
  6. Step 6: Final answer
    x = 131,118.73

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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.