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Finding the Fourth Proportional to 286,978,484.45, 396,043,287.50 and 161,573,770.61

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Solution

The fourth proportional to 286,978,484.45, 396,043,287.50 and 161,573,770.61 is: 222,979,110.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,978,484.45 : 396,043,287.50 = 161,573,770.61 : x
  2. Step 2: Convert to fraction form
    286,978,484.45/396,043,287.50 = 161,573,770.61/x
  3. Step 3: Cross multiply
    286,978,484.45x = 396,043,287.50 × 161,573,770.61
  4. Step 4: Simplify right side
    286,978,484.45x = 63,990,207,286,064,152
  5. Step 5: Solve for x
    x = 63,990,207,286,064,152/286,978,484.45
  6. Step 6: Final answer
    x = 222,979,110.81

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