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Finding the Fourth Proportional to 351,686.09, 485,327.08 and 206,463.44

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Solution

The fourth proportional to 351,686.09, 485,327.08 and 206,463.44 is: 284,919.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,686.09 : 485,327.08 = 206,463.44 : x
  2. Step 2: Convert to fraction form
    351,686.09/485,327.08 = 206,463.44/x
  3. Step 3: Cross multiply
    351,686.09x = 485,327.08 × 206,463.44
  4. Step 4: Simplify right side
    351,686.09x = 100,202,299,933.35
  5. Step 5: Solve for x
    x = 100,202,299,933.35/351,686.09
  6. Step 6: Final answer
    x = 284,919.71

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1.5x scale

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.