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Finding the Fourth Proportional to 220,770.34, 331,204.88 and 80,528.97

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Solution

The fourth proportional to 220,770.34, 331,204.88 and 80,528.97 is: 120,811.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,770.34 : 331,204.88 = 80,528.97 : x
  2. Step 2: Convert to fraction form
    220,770.34/331,204.88 = 80,528.97/x
  3. Step 3: Cross multiply
    220,770.34x = 331,204.88 × 80,528.97
  4. Step 4: Simplify right side
    220,770.34x = 26,671,585,786.70
  5. Step 5: Solve for x
    x = 26,671,585,786.70/220,770.34
  6. Step 6: Final answer
    x = 120,811.45

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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.