Home / 378,821.78-522,776.92-206,741.06

Finding the Fourth Proportional to 378,821.78, 522,776.92 and 206,741.06

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Solution

The fourth proportional to 378,821.78, 522,776.92 and 206,741.06 is: 285,304.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,821.78 : 522,776.92 = 206,741.06 : x
  2. Step 2: Convert to fraction form
    378,821.78/522,776.92 = 206,741.06/x
  3. Step 3: Cross multiply
    378,821.78x = 522,776.92 × 206,741.06
  4. Step 4: Simplify right side
    378,821.78x = 108,079,454,584.34
  5. Step 5: Solve for x
    x = 108,079,454,584.34/378,821.78
  6. Step 6: Final answer
    x = 285,304.23

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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.