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Finding the Fourth Proportional to 245,689.64, 339,047.78 and 138,259.64

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Solution

The fourth proportional to 245,689.64, 339,047.78 and 138,259.64 is: 190,796.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,689.64 : 339,047.78 = 138,259.64 : x
  2. Step 2: Convert to fraction form
    245,689.64/339,047.78 = 138,259.64/x
  3. Step 3: Cross multiply
    245,689.64x = 339,047.78 × 138,259.64
  4. Step 4: Simplify right side
    245,689.64x = 46,876,624,005.60
  5. Step 5: Solve for x
    x = 46,876,624,005.60/245,689.64
  6. Step 6: Final answer
    x = 190,796.10

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