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Finding the Fourth Proportional to 371,728.88, 557,873.73 and 172,189.26

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Solution

The fourth proportional to 371,728.88, 557,873.73 and 172,189.26 is: 258,413.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,728.88 : 557,873.73 = 172,189.26 : x
  2. Step 2: Convert to fraction form
    371,728.88/557,873.73 = 172,189.26/x
  3. Step 3: Cross multiply
    371,728.88x = 557,873.73 × 172,189.26
  4. Step 4: Simplify right side
    371,728.88x = 96,059,864,742.14
  5. Step 5: Solve for x
    x = 96,059,864,742.14/371,728.88
  6. Step 6: Final answer
    x = 258,413.78

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