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Finding the Fourth Proportional to 300,138.70, 450,208.81 and 122,645.73

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Solution

The fourth proportional to 300,138.70, 450,208.81 and 122,645.73 is: 183,968.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,138.70 : 450,208.81 = 122,645.73 : x
  2. Step 2: Convert to fraction form
    300,138.70/450,208.81 = 122,645.73/x
  3. Step 3: Cross multiply
    300,138.70x = 450,208.81 × 122,645.73
  4. Step 4: Simplify right side
    300,138.70x = 55,216,188,154.88
  5. Step 5: Solve for x
    x = 55,216,188,154.88/300,138.70
  6. Step 6: Final answer
    x = 183,968.91

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