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Finding the Fourth Proportional to 230,382.78, 345,729.87 and 80,624.36

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Solution

The fourth proportional to 230,382.78, 345,729.87 and 80,624.36 is: 120,991.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,382.78 : 345,729.87 = 80,624.36 : x
  2. Step 2: Convert to fraction form
    230,382.78/345,729.87 = 80,624.36/x
  3. Step 3: Cross multiply
    230,382.78x = 345,729.87 × 80,624.36
  4. Step 4: Simplify right side
    230,382.78x = 27,874,250,365.96
  5. Step 5: Solve for x
    x = 27,874,250,365.96/230,382.78
  6. Step 6: Final answer
    x = 120,991.03

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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.