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Finding the Fourth Proportional to 317,990.88, 438,644.70 and 198,551.52

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Solution

The fourth proportional to 317,990.88, 438,644.70 and 198,551.52 is: 273,887.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,990.88 : 438,644.70 = 198,551.52 : x
  2. Step 2: Convert to fraction form
    317,990.88/438,644.70 = 198,551.52/x
  3. Step 3: Cross multiply
    317,990.88x = 438,644.70 × 198,551.52
  4. Step 4: Simplify right side
    317,990.88x = 87,093,571,924.94
  5. Step 5: Solve for x
    x = 87,093,571,924.94/317,990.88
  6. Step 6: Final answer
    x = 273,887.01

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