Home / 259,609.38-389,435.94-82,112.46

Finding the Fourth Proportional to 259,609.38, 389,435.94 and 82,112.46

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Solution

The fourth proportional to 259,609.38, 389,435.94 and 82,112.46 is: 123,175.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,609.38 : 389,435.94 = 82,112.46 : x
  2. Step 2: Convert to fraction form
    259,609.38/389,435.94 = 82,112.46/x
  3. Step 3: Cross multiply
    259,609.38x = 389,435.94 × 82,112.46
  4. Step 4: Simplify right side
    259,609.38x = 31,977,543,045.81
  5. Step 5: Solve for x
    x = 31,977,543,045.81/259,609.38
  6. Step 6: Final answer
    x = 123,175.61

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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.