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Finding the Fourth Proportional to 351,676.28, 485,313.54 and 206,453.64

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Solution

The fourth proportional to 351,676.28, 485,313.54 and 206,453.64 is: 284,906.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,676.28 : 485,313.54 = 206,453.64 : x
  2. Step 2: Convert to fraction form
    351,676.28/485,313.54 = 206,453.64/x
  3. Step 3: Cross multiply
    351,676.28x = 485,313.54 × 206,453.64
  4. Step 4: Simplify right side
    351,676.28x = 100,194,746,874.29
  5. Step 5: Solve for x
    x = 100,194,746,874.29/351,676.28
  6. Step 6: Final answer
    x = 284,906.18

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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.