Home / 351,736.10-485,367.09-198,788.12

Finding the Fourth Proportional to 351,736.10, 485,367.09 and 198,788.12

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Solution

The fourth proportional to 351,736.10, 485,367.09 and 198,788.12 is: 274,311.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,736.10 : 485,367.09 = 198,788.12 : x
  2. Step 2: Convert to fraction form
    351,736.10/485,367.09 = 198,788.12/x
  3. Step 3: Cross multiply
    351,736.10x = 485,367.09 × 198,788.12
  4. Step 4: Simplify right side
    351,736.10x = 96,485,211,330.97
  5. Step 5: Solve for x
    x = 96,485,211,330.97/351,736.10
  6. Step 6: Final answer
    x = 274,311.37

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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.