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Finding the Fourth Proportional to 351,958.32, 485,696.52 and 198,993.96

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Solution

The fourth proportional to 351,958.32, 485,696.52 and 198,993.96 is: 274,608.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,958.32 : 485,696.52 = 198,993.96 : x
  2. Step 2: Convert to fraction form
    351,958.32/485,696.52 = 198,993.96/x
  3. Step 3: Cross multiply
    351,958.32x = 485,696.52 × 198,993.96
  4. Step 4: Simplify right side
    351,958.32x = 96,650,673,873.02
  5. Step 5: Solve for x
    x = 96,650,673,873.02/351,958.32
  6. Step 6: Final answer
    x = 274,608.29

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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.