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Finding the Fourth Proportional to 310,728.04, 428,863.52 and 194,495.40

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Solution

The fourth proportional to 310,728.04, 428,863.52 and 194,495.40 is: 268,440.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,728.04 : 428,863.52 = 194,495.40 : x
  2. Step 2: Convert to fraction form
    310,728.04/428,863.52 = 194,495.40/x
  3. Step 3: Cross multiply
    310,728.04x = 428,863.52 × 194,495.40
  4. Step 4: Simplify right side
    310,728.04x = 83,411,981,867.81
  5. Step 5: Solve for x
    x = 83,411,981,867.81/310,728.04
  6. Step 6: Final answer
    x = 268,440.47

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