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Finding the Fourth Proportional to 330,418.20, 495,627.30 and 313,359.60

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Solution

The fourth proportional to 330,418.20, 495,627.30 and 313,359.60 is: 470,039.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,418.20 : 495,627.30 = 313,359.60 : x
  2. Step 2: Convert to fraction form
    330,418.20/495,627.30 = 313,359.60/x
  3. Step 3: Cross multiply
    330,418.20x = 495,627.30 × 313,359.60
  4. Step 4: Simplify right side
    330,418.20x = 155,309,572,477.08
  5. Step 5: Solve for x
    x = 155,309,572,477.08/330,418.20
  6. Step 6: Final answer
    x = 470,039.40

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