Home / 197,255.22-272,198.54-111,217.28

Finding the Fourth Proportional to 197,255.22, 272,198.54 and 111,217.28

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Solution

The fourth proportional to 197,255.22, 272,198.54 and 111,217.28 is: 153,472.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,255.22 : 272,198.54 = 111,217.28 : x
  2. Step 2: Convert to fraction form
    197,255.22/272,198.54 = 111,217.28/x
  3. Step 3: Cross multiply
    197,255.22x = 272,198.54 × 111,217.28
  4. Step 4: Simplify right side
    197,255.22x = 30,273,179,321.69
  5. Step 5: Solve for x
    x = 30,273,179,321.69/197,255.22
  6. Step 6: Final answer
    x = 153,472.13

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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.