Home / 279,739.32-386,183.22-189,571.72

Finding the Fourth Proportional to 279,739.32, 386,183.22 and 189,571.72

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Solution

The fourth proportional to 279,739.32, 386,183.22 and 189,571.72 is: 261,705.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,739.32 : 386,183.22 = 189,571.72 : x
  2. Step 2: Convert to fraction form
    279,739.32/386,183.22 = 189,571.72/x
  3. Step 3: Cross multiply
    279,739.32x = 386,183.22 × 189,571.72
  4. Step 4: Simplify right side
    279,739.32x = 73,209,417,250.54
  5. Step 5: Solve for x
    x = 73,209,417,250.54/279,739.32
  6. Step 6: Final answer
    x = 261,705.85

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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.