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Finding the Fourth Proportional to 285,949.37, 428,645.13 and 136,149.41

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Solution

The fourth proportional to 285,949.37, 428,645.13 and 136,149.41 is: 204,091.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,949.37 : 428,645.13 = 136,149.41 : x
  2. Step 2: Convert to fraction form
    285,949.37/428,645.13 = 136,149.41/x
  3. Step 3: Cross multiply
    285,949.37x = 428,645.13 × 136,149.41
  4. Step 4: Simplify right side
    285,949.37x = 58,359,781,548.87
  5. Step 5: Solve for x
    x = 58,359,781,548.87/285,949.37
  6. Step 6: Final answer
    x = 204,091.31

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