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Finding the Fourth Proportional to 391,978.16, 587,777.04 and 229,916.48

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Solution

The fourth proportional to 391,978.16, 587,777.04 and 229,916.48 is: 344,763.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,978.16 : 587,777.04 = 229,916.48 : x
  2. Step 2: Convert to fraction form
    391,978.16/587,777.04 = 229,916.48/x
  3. Step 3: Cross multiply
    391,978.16x = 587,777.04 × 229,916.48
  4. Step 4: Simplify right side
    391,978.16x = 135,139,628,061.62
  5. Step 5: Solve for x
    x = 135,139,628,061.62/391,978.16
  6. Step 6: Final answer
    x = 344,763.16

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