Home / 285,634.24-394,161-158,308.72

Finding the Fourth Proportional to 285,634.24, 394,161 and 158,308.72

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Solution

The fourth proportional to 285,634.24, 394,161 and 158,308.72 is: 218,458.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,634.24 : 394,161 = 158,308.72 : x
  2. Step 2: Convert to fraction form
    285,634.24/394,161 = 158,308.72/x
  3. Step 3: Cross multiply
    285,634.24x = 394,161 × 158,308.72
  4. Step 4: Simplify right side
    285,634.24x = 62,399,123,383.92
  5. Step 5: Solve for x
    x = 62,399,123,383.92/285,634.24
  6. Step 6: Final answer
    x = 218,458.14

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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.