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Finding the Fourth Proportional to 282,399.35, 389,381.85 and 210,654.81

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Solution

The fourth proportional to 282,399.35, 389,381.85 and 210,654.81 is: 290,458.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,399.35 : 389,381.85 = 210,654.81 : x
  2. Step 2: Convert to fraction form
    282,399.35/389,381.85 = 210,654.81/x
  3. Step 3: Cross multiply
    282,399.35x = 389,381.85 × 210,654.81
  4. Step 4: Simplify right side
    282,399.35x = 82,025,159,629.20
  5. Step 5: Solve for x
    x = 82,025,159,629.20/282,399.35
  6. Step 6: Final answer
    x = 290,458.03

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