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Finding the Fourth Proportional to 306,806.46, 460,136.78 and 138,222.78

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Solution

The fourth proportional to 306,806.46, 460,136.78 and 138,222.78 is: 207,301.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,806.46 : 460,136.78 = 138,222.78 : x
  2. Step 2: Convert to fraction form
    306,806.46/460,136.78 = 138,222.78/x
  3. Step 3: Cross multiply
    306,806.46x = 460,136.78 × 138,222.78
  4. Step 4: Simplify right side
    306,806.46x = 63,601,384,911.85
  5. Step 5: Solve for x
    x = 63,601,384,911.85/306,806.46
  6. Step 6: Final answer
    x = 207,301.32

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