Home / 220,805.12-331,213.16-80,563.76

Finding the Fourth Proportional to 220,805.12, 331,213.16 and 80,563.76

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Solution

The fourth proportional to 220,805.12, 331,213.16 and 80,563.76 is: 120,847.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,805.12 : 331,213.16 = 80,563.76 : x
  2. Step 2: Convert to fraction form
    220,805.12/331,213.16 = 80,563.76/x
  3. Step 3: Cross multiply
    220,805.12x = 331,213.16 × 80,563.76
  4. Step 4: Simplify right side
    220,805.12x = 26,683,777,531.08
  5. Step 5: Solve for x
    x = 26,683,777,531.08/220,805.12
  6. Step 6: Final answer
    x = 120,847.64

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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.