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Finding the Fourth Proportional to 308,839.60, 463,259.40 and 214,361.20

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Solution

The fourth proportional to 308,839.60, 463,259.40 and 214,361.20 is: 321,541.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,839.60 : 463,259.40 = 214,361.20 : x
  2. Step 2: Convert to fraction form
    308,839.60/463,259.40 = 214,361.20/x
  3. Step 3: Cross multiply
    308,839.60x = 463,259.40 × 214,361.20
  4. Step 4: Simplify right side
    308,839.60x = 99,304,840,895.28
  5. Step 5: Solve for x
    x = 99,304,840,895.28/308,839.60
  6. Step 6: Final answer
    x = 321,541.80

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