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Finding the Fourth Proportional to 212,928.26, 318,728.03 and 156,831.71

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Solution

The fourth proportional to 212,928.26, 318,728.03 and 156,831.71 is: 234,758.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,928.26 : 318,728.03 = 156,831.71 : x
  2. Step 2: Convert to fraction form
    212,928.26/318,728.03 = 156,831.71/x
  3. Step 3: Cross multiply
    212,928.26x = 318,728.03 × 156,831.71
  4. Step 4: Simplify right side
    212,928.26x = 49,986,659,592.03
  5. Step 5: Solve for x
    x = 49,986,659,592.03/212,928.26
  6. Step 6: Final answer
    x = 234,758.23

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