Home / 259,605.38-389,429.94-82,108.46

Finding the Fourth Proportional to 259,605.38, 389,429.94 and 82,108.46

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Solution

The fourth proportional to 259,605.38, 389,429.94 and 82,108.46 is: 123,169.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,605.38 : 389,429.94 = 82,108.46 : x
  2. Step 2: Convert to fraction form
    259,605.38/389,429.94 = 82,108.46/x
  3. Step 3: Cross multiply
    259,605.38x = 389,429.94 × 82,108.46
  4. Step 4: Simplify right side
    259,605.38x = 31,975,492,651.29
  5. Step 5: Solve for x
    x = 31,975,492,651.29/259,605.38
  6. Step 6: Final answer
    x = 123,169.61

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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.