Home / 259,743.90-389,615.85-82,305.30

Finding the Fourth Proportional to 259,743.90, 389,615.85 and 82,305.30

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Solution

The fourth proportional to 259,743.90, 389,615.85 and 82,305.30 is: 123,457.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,743.90 : 389,615.85 = 82,305.30 : x
  2. Step 2: Convert to fraction form
    259,743.90/389,615.85 = 82,305.30/x
  3. Step 3: Cross multiply
    259,743.90x = 389,615.85 × 82,305.30
  4. Step 4: Simplify right side
    259,743.90x = 32,067,449,419.01
  5. Step 5: Solve for x
    x = 32,067,449,419.01/259,743.90
  6. Step 6: Final answer
    x = 123,457.95

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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.