Home / 221,155.44-305,021.88-153,198.06

Finding the Fourth Proportional to 221,155.44, 305,021.88 and 153,198.06

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Solution

The fourth proportional to 221,155.44, 305,021.88 and 153,198.06 is: 211,293.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,155.44 : 305,021.88 = 153,198.06 : x
  2. Step 2: Convert to fraction form
    221,155.44/305,021.88 = 153,198.06/x
  3. Step 3: Cross multiply
    221,155.44x = 305,021.88 × 153,198.06
  4. Step 4: Simplify right side
    221,155.44x = 46,728,760,273.55
  5. Step 5: Solve for x
    x = 46,728,760,273.55/221,155.44
  6. Step 6: Final answer
    x = 211,293.74

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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.