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Finding the Fourth Proportional to 391,894.10, 540,835.25 and 219,866.54

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Solution

The fourth proportional to 391,894.10, 540,835.25 and 219,866.54 is: 303,427.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,894.10 : 540,835.25 = 219,866.54 : x
  2. Step 2: Convert to fraction form
    391,894.10/540,835.25 = 219,866.54/x
  3. Step 3: Cross multiply
    391,894.10x = 540,835.25 × 219,866.54
  4. Step 4: Simplify right side
    391,894.10x = 118,911,571,324.03
  5. Step 5: Solve for x
    x = 118,911,571,324.03/391,894.10
  6. Step 6: Final answer
    x = 303,427.82

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