Home / 414,213.32-621,321.60-126,027.81

Finding the Fourth Proportional to 414,213.32, 621,321.60 and 126,027.81

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Solution

The fourth proportional to 414,213.32, 621,321.60 and 126,027.81 is: 189,042.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,213.32 : 621,321.60 = 126,027.81 : x
  2. Step 2: Convert to fraction form
    414,213.32/621,321.60 = 126,027.81/x
  3. Step 3: Cross multiply
    414,213.32x = 621,321.60 × 126,027.81
  4. Step 4: Simplify right side
    414,213.32x = 78,303,800,553.70
  5. Step 5: Solve for x
    x = 78,303,800,553.70/414,213.32
  6. Step 6: Final answer
    x = 189,042.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.