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Finding the Fourth Proportional to 313,878.60, 470,126.70 and 278,857.80

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Solution

The fourth proportional to 313,878.60, 470,126.70 and 278,857.80 is: 417,672.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,878.60 : 470,126.70 = 278,857.80 : x
  2. Step 2: Convert to fraction form
    313,878.60/470,126.70 = 278,857.80/x
  3. Step 3: Cross multiply
    313,878.60x = 470,126.70 × 278,857.80
  4. Step 4: Simplify right side
    313,878.60x = 131,098,497,283.26
  5. Step 5: Solve for x
    x = 131,098,497,283.26/313,878.60
  6. Step 6: Final answer
    x = 417,672.62

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