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Finding the Fourth Proportional to 258,310.87, 387,098.29 and 190,308.08

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Solution

The fourth proportional to 258,310.87, 387,098.29 and 190,308.08 is: 285,190.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,310.87 : 387,098.29 = 190,308.08 : x
  2. Step 2: Convert to fraction form
    258,310.87/387,098.29 = 190,308.08/x
  3. Step 3: Cross multiply
    258,310.87x = 387,098.29 × 190,308.08
  4. Step 4: Simplify right side
    258,310.87x = 73,667,933,546.81
  5. Step 5: Solve for x
    x = 73,667,933,546.81/258,310.87
  6. Step 6: Final answer
    x = 285,190.99

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