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Finding the Fourth Proportional to 218,121.64, 300,999.96 and 122,637.28

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Solution

The fourth proportional to 218,121.64, 300,999.96 and 122,637.28 is: 169,235.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,121.64 : 300,999.96 = 122,637.28 : x
  2. Step 2: Convert to fraction form
    218,121.64/300,999.96 = 122,637.28/x
  3. Step 3: Cross multiply
    218,121.64x = 300,999.96 × 122,637.28
  4. Step 4: Simplify right side
    218,121.64x = 36,913,816,374.51
  5. Step 5: Solve for x
    x = 36,913,816,374.51/218,121.64
  6. Step 6: Final answer
    x = 169,235.00

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