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Finding the Fourth Proportional to 389,991.12, 585,022.38 and 109,506.48

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Solution

The fourth proportional to 389,991.12, 585,022.38 and 109,506.48 is: 164,269.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,991.12 : 585,022.38 = 109,506.48 : x
  2. Step 2: Convert to fraction form
    389,991.12/585,022.38 = 109,506.48/x
  3. Step 3: Cross multiply
    389,991.12x = 585,022.38 × 109,506.48
  4. Step 4: Simplify right side
    389,991.12x = 64,063,741,555.02
  5. Step 5: Solve for x
    x = 64,063,741,555.02/389,991.12
  6. Step 6: Final answer
    x = 164,269.74

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