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Finding the Fourth Proportional to 216,710.69, 324,985.21 and 74,515.75

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Solution

The fourth proportional to 216,710.69, 324,985.21 and 74,515.75 is: 111,745.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,710.69 : 324,985.21 = 74,515.75 : x
  2. Step 2: Convert to fraction form
    216,710.69/324,985.21 = 74,515.75/x
  3. Step 3: Cross multiply
    216,710.69x = 324,985.21 × 74,515.75
  4. Step 4: Simplify right side
    216,710.69x = 24,216,516,082.46
  5. Step 5: Solve for x
    x = 24,216,516,082.46/216,710.69
  6. Step 6: Final answer
    x = 111,745.83

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