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Finding the Fourth Proportional to 310,511.40, 428,499.90 and 195,766.80

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Solution

The fourth proportional to 310,511.40, 428,499.90 and 195,766.80 is: 270,154.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,511.40 : 428,499.90 = 195,766.80 : x
  2. Step 2: Convert to fraction form
    310,511.40/428,499.90 = 195,766.80/x
  3. Step 3: Cross multiply
    310,511.40x = 428,499.90 × 195,766.80
  4. Step 4: Simplify right side
    310,511.40x = 83,886,054,223.32
  5. Step 5: Solve for x
    x = 83,886,054,223.32/310,511.40
  6. Step 6: Final answer
    x = 270,154.51

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