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Finding the Fourth Proportional to 263,313.60, 394,970.40 and 258,064.80

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Solution

The fourth proportional to 263,313.60, 394,970.40 and 258,064.80 is: 387,097.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,313.60 : 394,970.40 = 258,064.80 : x
  2. Step 2: Convert to fraction form
    263,313.60/394,970.40 = 258,064.80/x
  3. Step 3: Cross multiply
    263,313.60x = 394,970.40 × 258,064.80
  4. Step 4: Simplify right side
    263,313.60x = 101,927,957,281.92
  5. Step 5: Solve for x
    x = 101,927,957,281.92/263,313.60
  6. Step 6: Final answer
    x = 387,097.20

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