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Finding the Fourth Proportional to 220,509.96, 330,842.69 and 80,282.76

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Solution

The fourth proportional to 220,509.96, 330,842.69 and 80,282.76 is: 120,452.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,509.96 : 330,842.69 = 80,282.76 : x
  2. Step 2: Convert to fraction form
    220,509.96/330,842.69 = 80,282.76/x
  3. Step 3: Cross multiply
    220,509.96x = 330,842.69 × 80,282.76
  4. Step 4: Simplify right side
    220,509.96x = 26,560,964,279.02
  5. Step 5: Solve for x
    x = 26,560,964,279.02/220,509.96
  6. Step 6: Final answer
    x = 120,452.45

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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.