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Finding the Fourth Proportional to 220,636.77, 330,889.18 and 80,362.59

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Solution

The fourth proportional to 220,636.77, 330,889.18 and 80,362.59 is: 120,519.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,636.77 : 330,889.18 = 80,362.59 : x
  2. Step 2: Convert to fraction form
    220,636.77/330,889.18 = 80,362.59/x
  3. Step 3: Cross multiply
    220,636.77x = 330,889.18 × 80,362.59
  4. Step 4: Simplify right side
    220,636.77x = 26,591,111,507.78
  5. Step 5: Solve for x
    x = 26,591,111,507.78/220,636.77
  6. Step 6: Final answer
    x = 120,519.85

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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.