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Finding the Fourth Proportional to 220,123.40, 330,165.90 and 72,379.40

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Solution

The fourth proportional to 220,123.40, 330,165.90 and 72,379.40 is: 108,562.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,123.40 : 330,165.90 = 72,379.40 : x
  2. Step 2: Convert to fraction form
    220,123.40/330,165.90 = 72,379.40/x
  3. Step 3: Cross multiply
    220,123.40x = 330,165.90 × 72,379.40
  4. Step 4: Simplify right side
    220,123.40x = 23,897,209,742.46
  5. Step 5: Solve for x
    x = 23,897,209,742.46/220,123.40
  6. Step 6: Final answer
    x = 108,562.79

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