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Finding the Fourth Proportional to 281,413.28, 388,346.47 and 154,088.87

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Solution

The fourth proportional to 281,413.28, 388,346.47 and 154,088.87 is: 212,640.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,413.28 : 388,346.47 = 154,088.87 : x
  2. Step 2: Convert to fraction form
    281,413.28/388,346.47 = 154,088.87/x
  3. Step 3: Cross multiply
    281,413.28x = 388,346.47 × 154,088.87
  4. Step 4: Simplify right side
    281,413.28x = 59,839,866,403.83
  5. Step 5: Solve for x
    x = 59,839,866,403.83/281,413.28
  6. Step 6: Final answer
    x = 212,640.52

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