Home / 259,828.82-389,776.03-82,272.36

Finding the Fourth Proportional to 259,828.82, 389,776.03 and 82,272.36

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Solution

The fourth proportional to 259,828.82, 389,776.03 and 82,272.36 is: 123,418.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,828.82 : 389,776.03 = 82,272.36 : x
  2. Step 2: Convert to fraction form
    259,828.82/389,776.03 = 82,272.36/x
  3. Step 3: Cross multiply
    259,828.82x = 389,776.03 × 82,272.36
  4. Step 4: Simplify right side
    259,828.82x = 32,067,793,859.53
  5. Step 5: Solve for x
    x = 32,067,793,859.53/259,828.82
  6. Step 6: Final answer
    x = 123,418.93

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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.