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Finding the Fourth Proportional to 218,318.31, 301,262.60 and 122,806.55

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Solution

The fourth proportional to 218,318.31, 301,262.60 and 122,806.55 is: 169,463.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,318.31 : 301,262.60 = 122,806.55 : x
  2. Step 2: Convert to fraction form
    218,318.31/301,262.60 = 122,806.55/x
  3. Step 3: Cross multiply
    218,318.31x = 301,262.60 × 122,806.55
  4. Step 4: Simplify right side
    218,318.31x = 36,997,018,429.68
  5. Step 5: Solve for x
    x = 36,997,018,429.68/218,318.31
  6. Step 6: Final answer
    x = 169,463.65

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