Home / 378,822.71-522,778.40-206,742.06

Finding the Fourth Proportional to 378,822.71, 522,778.40 and 206,742.06

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Solution

The fourth proportional to 378,822.71, 522,778.40 and 206,742.06 is: 285,305.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,822.71 : 522,778.40 = 206,742.06 : x
  2. Step 2: Convert to fraction form
    378,822.71/522,778.40 = 206,742.06/x
  3. Step 3: Cross multiply
    378,822.71x = 522,778.40 × 206,742.06
  4. Step 4: Simplify right side
    378,822.71x = 108,080,282,305.79
  5. Step 5: Solve for x
    x = 108,080,282,305.79/378,822.71
  6. Step 6: Final answer
    x = 285,305.71

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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.