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Finding the Fourth Proportional to 313,402.80, 470,104.20 and 91,786.80

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Solution

The fourth proportional to 313,402.80, 470,104.20 and 91,786.80 is: 137,680.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,402.80 : 470,104.20 = 91,786.80 : x
  2. Step 2: Convert to fraction form
    313,402.80/470,104.20 = 91,786.80/x
  3. Step 3: Cross multiply
    313,402.80x = 470,104.20 × 91,786.80
  4. Step 4: Simplify right side
    313,402.80x = 43,149,360,184.56
  5. Step 5: Solve for x
    x = 43,149,360,184.56/313,402.80
  6. Step 6: Final answer
    x = 137,680.20

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