Home / 259,810.12-389,726.52-82,330.22

Finding the Fourth Proportional to 259,810.12, 389,726.52 and 82,330.22

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Solution

The fourth proportional to 259,810.12, 389,726.52 and 82,330.22 is: 123,498.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,810.12 : 389,726.52 = 82,330.22 : x
  2. Step 2: Convert to fraction form
    259,810.12/389,726.52 = 82,330.22/x
  3. Step 3: Cross multiply
    259,810.12x = 389,726.52 × 82,330.22
  4. Step 4: Simplify right side
    259,810.12x = 32,086,270,131.43
  5. Step 5: Solve for x
    x = 32,086,270,131.43/259,810.12
  6. Step 6: Final answer
    x = 123,498.92

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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.