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Finding the Fourth Proportional to 220,508.45, 330,840.43 and 80,281.25

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Solution

The fourth proportional to 220,508.45, 330,840.43 and 80,281.25 is: 120,450.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,508.45 : 330,840.43 = 80,281.25 : x
  2. Step 2: Convert to fraction form
    220,508.45/330,840.43 = 80,281.25/x
  3. Step 3: Cross multiply
    220,508.45x = 330,840.43 × 80,281.25
  4. Step 4: Simplify right side
    220,508.45x = 26,560,283,270.94
  5. Step 5: Solve for x
    x = 26,560,283,270.94/220,508.45
  6. Step 6: Final answer
    x = 120,450.18

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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.