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Finding the Fourth Proportional to 351,668.73, 485,274.16 and 206,459.22

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Solution

The fourth proportional to 351,668.73, 485,274.16 and 206,459.22 is: 284,896.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,668.73 : 485,274.16 = 206,459.22 : x
  2. Step 2: Convert to fraction form
    351,668.73/485,274.16 = 206,459.22/x
  3. Step 3: Cross multiply
    351,668.73x = 485,274.16 × 206,459.22
  4. Step 4: Simplify right side
    351,668.73x = 100,189,324,043.61
  5. Step 5: Solve for x
    x = 100,189,324,043.61/351,668.73
  6. Step 6: Final answer
    x = 284,896.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.