Home / 259,615.10-389,463.16-82,105.22

Finding the Fourth Proportional to 259,615.10, 389,463.16 and 82,105.22

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Solution

The fourth proportional to 259,615.10, 389,463.16 and 82,105.22 is: 123,170.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,615.10 : 389,463.16 = 82,105.22 : x
  2. Step 2: Convert to fraction form
    259,615.10/389,463.16 = 82,105.22/x
  3. Step 3: Cross multiply
    259,615.10x = 389,463.16 × 82,105.22
  4. Step 4: Simplify right side
    259,615.10x = 31,976,958,433.70
  5. Step 5: Solve for x
    x = 31,976,958,433.70/259,615.10
  6. Step 6: Final answer
    x = 123,170.64

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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.