Home / 218,822.20-328,233.30-107,999.80

Finding the Fourth Proportional to 218,822.20, 328,233.30 and 107,999.80

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Solution

The fourth proportional to 218,822.20, 328,233.30 and 107,999.80 is: 161,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,822.20 : 328,233.30 = 107,999.80 : x
  2. Step 2: Convert to fraction form
    218,822.20/328,233.30 = 107,999.80/x
  3. Step 3: Cross multiply
    218,822.20x = 328,233.30 × 107,999.80
  4. Step 4: Simplify right side
    218,822.20x = 35,449,130,753.34
  5. Step 5: Solve for x
    x = 35,449,130,753.34/218,822.20
  6. Step 6: Final answer
    x = 161,999.70

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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.