Home / 259,874.10-389,778.30-82,382.85

Finding the Fourth Proportional to 259,874.10, 389,778.30 and 82,382.85

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Solution

The fourth proportional to 259,874.10, 389,778.30 and 82,382.85 is: 123,563.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,874.10 : 389,778.30 = 82,382.85 : x
  2. Step 2: Convert to fraction form
    259,874.10/389,778.30 = 82,382.85/x
  3. Step 3: Cross multiply
    259,874.10x = 389,778.30 × 82,382.85
  4. Step 4: Simplify right side
    259,874.10x = 32,111,047,222.16
  5. Step 5: Solve for x
    x = 32,111,047,222.16/259,874.10
  6. Step 6: Final answer
    x = 123,563.86

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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.