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Finding the Fourth Proportional to 220,620.93, 330,865.65 and 80,346.75

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Solution

The fourth proportional to 220,620.93, 330,865.65 and 80,346.75 is: 120,496.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,620.93 : 330,865.65 = 80,346.75 : x
  2. Step 2: Convert to fraction form
    220,620.93/330,865.65 = 80,346.75/x
  3. Step 3: Cross multiply
    220,620.93x = 330,865.65 × 80,346.75
  4. Step 4: Simplify right side
    220,620.93x = 26,583,979,664.14
  5. Step 5: Solve for x
    x = 26,583,979,664.14/220,620.93
  6. Step 6: Final answer
    x = 120,496.18

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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.