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Finding the Fourth Proportional to 368,432.80, 552,940.80 and 143,900.80

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Solution

The fourth proportional to 368,432.80, 552,940.80 and 143,900.80 is: 215,965.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,432.80 : 552,940.80 = 143,900.80 : x
  2. Step 2: Convert to fraction form
    368,432.80/552,940.80 = 143,900.80/x
  3. Step 3: Cross multiply
    368,432.80x = 552,940.80 × 143,900.80
  4. Step 4: Simplify right side
    368,432.80x = 79,568,623,472.64
  5. Step 5: Solve for x
    x = 79,568,623,472.64/368,432.80
  6. Step 6: Final answer
    x = 215,965.09

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