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Finding the Fourth Proportional to 220,764.80, 331,196.58 and 80,523.42

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Solution

The fourth proportional to 220,764.80, 331,196.58 and 80,523.42 is: 120,803.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,764.80 : 331,196.58 = 80,523.42 : x
  2. Step 2: Convert to fraction form
    220,764.80/331,196.58 = 80,523.42/x
  3. Step 3: Cross multiply
    220,764.80x = 331,196.58 × 80,523.42
  4. Step 4: Simplify right side
    220,764.80x = 26,669,082,555.89
  5. Step 5: Solve for x
    x = 26,669,082,555.89/220,764.80
  6. Step 6: Final answer
    x = 120,803.15

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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.