Home / 259,664.70-389,456.55-82,215.30

Finding the Fourth Proportional to 259,664.70, 389,456.55 and 82,215.30

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Solution

The fourth proportional to 259,664.70, 389,456.55 and 82,215.30 is: 123,310.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,664.70 : 389,456.55 = 82,215.30 : x
  2. Step 2: Convert to fraction form
    259,664.70/389,456.55 = 82,215.30/x
  3. Step 3: Cross multiply
    259,664.70x = 389,456.55 × 82,215.30
  4. Step 4: Simplify right side
    259,664.70x = 32,019,287,095.22
  5. Step 5: Solve for x
    x = 32,019,287,095.22/259,664.70
  6. Step 6: Final answer
    x = 123,310.13

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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.