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Finding the Fourth Proportional to 309,938.97, 427,661.72 and 173,978.65

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Solution

The fourth proportional to 309,938.97, 427,661.72 and 173,978.65 is: 240,060.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,938.97 : 427,661.72 = 173,978.65 : x
  2. Step 2: Convert to fraction form
    309,938.97/427,661.72 = 173,978.65/x
  3. Step 3: Cross multiply
    309,938.97x = 427,661.72 × 173,978.65
  4. Step 4: Simplify right side
    309,938.97x = 74,404,006,563.97
  5. Step 5: Solve for x
    x = 74,404,006,563.97/309,938.97
  6. Step 6: Final answer
    x = 240,060.19

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