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Finding the Fourth Proportional to 340,857.59, 511,286.36 and 91,539.59

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Solution

The fourth proportional to 340,857.59, 511,286.36 and 91,539.59 is: 137,309.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,857.59 : 511,286.36 = 91,539.59 : x
  2. Step 2: Convert to fraction form
    340,857.59/511,286.36 = 91,539.59/x
  3. Step 3: Cross multiply
    340,857.59x = 511,286.36 × 91,539.59
  4. Step 4: Simplify right side
    340,857.59x = 46,802,940,752.86
  5. Step 5: Solve for x
    x = 46,802,940,752.86/340,857.59
  6. Step 6: Final answer
    x = 137,309.37

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