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Finding the Fourth Proportional to 428,334.68, 642,793.08 and 228,798.56

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Solution

The fourth proportional to 428,334.68, 642,793.08 and 228,798.56 is: 343,353.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,334.68 : 642,793.08 = 228,798.56 : x
  2. Step 2: Convert to fraction form
    428,334.68/642,793.08 = 228,798.56/x
  3. Step 3: Cross multiply
    428,334.68x = 642,793.08 × 228,798.56
  4. Step 4: Simplify right side
    428,334.68x = 147,070,131,081.97
  5. Step 5: Solve for x
    x = 147,070,131,081.97/428,334.68
  6. Step 6: Final answer
    x = 343,353.31

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