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Finding the Fourth Proportional to 456,245.40, 684,368.10 and 220,049.40

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Solution

The fourth proportional to 456,245.40, 684,368.10 and 220,049.40 is: 330,074.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,245.40 : 684,368.10 = 220,049.40 : x
  2. Step 2: Convert to fraction form
    456,245.40/684,368.10 = 220,049.40/x
  3. Step 3: Cross multiply
    456,245.40x = 684,368.10 × 220,049.40
  4. Step 4: Simplify right side
    456,245.40x = 150,594,789,784.14
  5. Step 5: Solve for x
    x = 150,594,789,784.14/456,245.40
  6. Step 6: Final answer
    x = 330,074.10

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