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Finding the Fourth Proportional to 220,580.31, 330,919.68 and 80,338.94

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Solution

The fourth proportional to 220,580.31, 330,919.68 and 80,338.94 is: 120,526.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,580.31 : 330,919.68 = 80,338.94 : x
  2. Step 2: Convert to fraction form
    220,580.31/330,919.68 = 80,338.94/x
  3. Step 3: Cross multiply
    220,580.31x = 330,919.68 × 80,338.94
  4. Step 4: Simplify right side
    220,580.31x = 26,585,736,316.34
  5. Step 5: Solve for x
    x = 26,585,736,316.34/220,580.31
  6. Step 6: Final answer
    x = 120,526.33

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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.