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Finding the Fourth Proportional to 216,040.94, 324,076.99 and 82,921.20

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Solution

The fourth proportional to 216,040.94, 324,076.99 and 82,921.20 is: 124,387.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,040.94 : 324,076.99 = 82,921.20 : x
  2. Step 2: Convert to fraction form
    216,040.94/324,076.99 = 82,921.20/x
  3. Step 3: Cross multiply
    216,040.94x = 324,076.99 × 82,921.20
  4. Step 4: Simplify right side
    216,040.94x = 26,872,852,903.19
  5. Step 5: Solve for x
    x = 26,872,852,903.19/216,040.94
  6. Step 6: Final answer
    x = 124,387.78

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