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Finding the Fourth Proportional to 198,717.60, 298,678.62 and 131,478.98

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Solution

The fourth proportional to 198,717.60, 298,678.62 and 131,478.98 is: 197,616.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,717.60 : 298,678.62 = 131,478.98 : x
  2. Step 2: Convert to fraction form
    198,717.60/298,678.62 = 131,478.98/x
  3. Step 3: Cross multiply
    198,717.60x = 298,678.62 × 131,478.98
  4. Step 4: Simplify right side
    198,717.60x = 39,269,958,812.01
  5. Step 5: Solve for x
    x = 39,269,958,812.01/198,717.60
  6. Step 6: Final answer
    x = 197,616.91

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