Home / 220,729.04-331,142.91-80,487.66

Finding the Fourth Proportional to 220,729.04, 331,142.91 and 80,487.66

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Solution

The fourth proportional to 220,729.04, 331,142.91 and 80,487.66 is: 120,749.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,729.04 : 331,142.91 = 80,487.66 : x
  2. Step 2: Convert to fraction form
    220,729.04/331,142.91 = 80,487.66/x
  3. Step 3: Cross multiply
    220,729.04x = 331,142.91 × 80,487.66
  4. Step 4: Simplify right side
    220,729.04x = 26,652,917,951.49
  5. Step 5: Solve for x
    x = 26,652,917,951.49/220,729.04
  6. Step 6: Final answer
    x = 120,749.49

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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.