Home / 378,823.12-522,759.44-206,736.73

Finding the Fourth Proportional to 378,823.12, 522,759.44 and 206,736.73

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Solution

The fourth proportional to 378,823.12, 522,759.44 and 206,736.73 is: 285,287.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,823.12 : 522,759.44 = 206,736.73 : x
  2. Step 2: Convert to fraction form
    378,823.12/522,759.44 = 206,736.73/x
  3. Step 3: Cross multiply
    378,823.12x = 522,759.44 × 206,736.73
  4. Step 4: Simplify right side
    378,823.12x = 108,073,576,412.17
  5. Step 5: Solve for x
    x = 108,073,576,412.17/378,823.12
  6. Step 6: Final answer
    x = 285,287.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.