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Finding the Fourth Proportional to 220,109.44, 330,213.12 and 79,864.96

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Solution

The fourth proportional to 220,109.44, 330,213.12 and 79,864.96 is: 119,815.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,109.44 : 330,213.12 = 79,864.96 : x
  2. Step 2: Convert to fraction form
    220,109.44/330,213.12 = 79,864.96/x
  3. Step 3: Cross multiply
    220,109.44x = 330,213.12 × 79,864.96
  4. Step 4: Simplify right side
    220,109.44x = 26,372,457,620.28
  5. Step 5: Solve for x
    x = 26,372,457,620.28/220,109.44
  6. Step 6: Final answer
    x = 119,815.20

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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.