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Finding the Fourth Proportional to 456,109.20, 684,163.80 and 219,913.20

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Solution

The fourth proportional to 456,109.20, 684,163.80 and 219,913.20 is: 329,869.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,109.20 : 684,163.80 = 219,913.20 : x
  2. Step 2: Convert to fraction form
    456,109.20/684,163.80 = 219,913.20/x
  3. Step 3: Cross multiply
    456,109.20x = 684,163.80 × 219,913.20
  4. Step 4: Simplify right side
    456,109.20x = 150,456,650,582.16
  5. Step 5: Solve for x
    x = 150,456,650,582.16/456,109.20
  6. Step 6: Final answer
    x = 329,869.80

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