Home / 259,685.43-389,586.51-82,203.09

Finding the Fourth Proportional to 259,685.43, 389,586.51 and 82,203.09

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Solution

The fourth proportional to 259,685.43, 389,586.51 and 82,203.09 is: 123,323.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,685.43 : 389,586.51 = 82,203.09 : x
  2. Step 2: Convert to fraction form
    259,685.43/389,586.51 = 82,203.09/x
  3. Step 3: Cross multiply
    259,685.43x = 389,586.51 × 82,203.09
  4. Step 4: Simplify right side
    259,685.43x = 32,025,214,944.32
  5. Step 5: Solve for x
    x = 32,025,214,944.32/259,685.43
  6. Step 6: Final answer
    x = 123,323.11

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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.