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Finding the Fourth Proportional to 218,593,917.80, 328,016,847.90 and 82,377,060.20

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Solution

The fourth proportional to 218,593,917.80, 328,016,847.90 and 82,377,060.20 is: 123,613,062.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,593,917.80 : 328,016,847.90 = 82,377,060.20 : x
  2. Step 2: Convert to fraction form
    218,593,917.80/328,016,847.90 = 82,377,060.20/x
  3. Step 3: Cross multiply
    218,593,917.80x = 328,016,847.90 × 82,377,060.20
  4. Step 4: Simplify right side
    218,593,917.80x = 27,021,063,626,072,544
  5. Step 5: Solve for x
    x = 27,021,063,626,072,544/218,593,917.80
  6. Step 6: Final answer
    x = 123,613,062.51

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