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Finding the Fourth Proportional to 485,221.29, 669,608.03 and 281,393.06

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Solution

The fourth proportional to 485,221.29, 669,608.03 and 281,393.06 is: 388,323.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,221.29 : 669,608.03 = 281,393.06 : x
  2. Step 2: Convert to fraction form
    485,221.29/669,608.03 = 281,393.06/x
  3. Step 3: Cross multiply
    485,221.29x = 669,608.03 × 281,393.06
  4. Step 4: Simplify right side
    485,221.29x = 188,423,049,214.23
  5. Step 5: Solve for x
    x = 188,423,049,214.23/485,221.29
  6. Step 6: Final answer
    x = 388,323.96

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