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Finding the Fourth Proportional to 391,366.52, 540,087.92 and 221,633.72

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Solution

The fourth proportional to 391,366.52, 540,087.92 and 221,633.72 is: 305,855.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,366.52 : 540,087.92 = 221,633.72 : x
  2. Step 2: Convert to fraction form
    391,366.52/540,087.92 = 221,633.72/x
  3. Step 3: Cross multiply
    391,366.52x = 540,087.92 × 221,633.72
  4. Step 4: Simplify right side
    391,366.52x = 119,701,694,836.66
  5. Step 5: Solve for x
    x = 119,701,694,836.66/391,366.52
  6. Step 6: Final answer
    x = 305,855.74

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