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Finding the Fourth Proportional to 197,622, 272,718.36 and 108,198

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Solution

The fourth proportional to 197,622, 272,718.36 and 108,198 is: 149,313.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,622 : 272,718.36 = 108,198 : x
  2. Step 2: Convert to fraction form
    197,622/272,718.36 = 108,198/x
  3. Step 3: Cross multiply
    197,622x = 272,718.36 × 108,198
  4. Step 4: Simplify right side
    197,622x = 29,507,581,115.28
  5. Step 5: Solve for x
    x = 29,507,581,115.28/197,622
  6. Step 6: Final answer
    x = 149,313.24

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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.