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Finding the Fourth Proportional to 218,103,954.42, 300,978,613.17 and 120,318,784.50

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Solution

The fourth proportional to 218,103,954.42, 300,978,613.17 and 120,318,784.50 is: 166,037,250.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,103,954.42 : 300,978,613.17 = 120,318,784.50 : x
  2. Step 2: Convert to fraction form
    218,103,954.42/300,978,613.17 = 120,318,784.50/x
  3. Step 3: Cross multiply
    218,103,954.42x = 300,978,613.17 × 120,318,784.50
  4. Step 4: Simplify right side
    218,103,954.42x = 36,213,380,897,110,096
  5. Step 5: Solve for x
    x = 36,213,380,897,110,096/218,103,954.42
  6. Step 6: Final answer
    x = 166,037,250.42

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