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Finding the Fourth Proportional to 399,639.28, 599,695.35 and 147,097.12

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Solution

The fourth proportional to 399,639.28, 599,695.35 and 147,097.12 is: 220,732.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,639.28 : 599,695.35 = 147,097.12 : x
  2. Step 2: Convert to fraction form
    399,639.28/599,695.35 = 147,097.12/x
  3. Step 3: Cross multiply
    399,639.28x = 599,695.35 × 147,097.12
  4. Step 4: Simplify right side
    399,639.28x = 88,213,458,862.39
  5. Step 5: Solve for x
    x = 88,213,458,862.39/399,639.28
  6. Step 6: Final answer
    x = 220,732.70

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