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Finding the Fourth Proportional to 218,103,960.92, 300,978,621.78 and 120,318,791

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Solution

The fourth proportional to 218,103,960.92, 300,978,621.78 and 120,318,791 is: 166,037,259.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,103,960.92 : 300,978,621.78 = 120,318,791 : x
  2. Step 2: Convert to fraction form
    218,103,960.92/300,978,621.78 = 120,318,791/x
  3. Step 3: Cross multiply
    218,103,960.92x = 300,978,621.78 × 120,318,791
  4. Step 4: Simplify right side
    218,103,960.92x = 36,213,383,889,415,864
  5. Step 5: Solve for x
    x = 36,213,383,889,415,864/218,103,960.92
  6. Step 6: Final answer
    x = 166,037,259.19

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