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Finding the Fourth Proportional to 225,400, 311,061.72 and 124,798

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Solution

The fourth proportional to 225,400, 311,061.72 and 124,798 is: 172,226.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,400 : 311,061.72 = 124,798 : x
  2. Step 2: Convert to fraction form
    225,400/311,061.72 = 124,798/x
  3. Step 3: Cross multiply
    225,400x = 311,061.72 × 124,798
  4. Step 4: Simplify right side
    225,400x = 38,819,880,532.56
  5. Step 5: Solve for x
    x = 38,819,880,532.56/225,400
  6. Step 6: Final answer
    x = 172,226.62

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