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Finding the Fourth Proportional to 381,321.44, 526,220.96 and 211,555.56

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Solution

The fourth proportional to 381,321.44, 526,220.96 and 211,555.56 is: 291,945.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,321.44 : 526,220.96 = 211,555.56 : x
  2. Step 2: Convert to fraction form
    381,321.44/526,220.96 = 211,555.56/x
  3. Step 3: Cross multiply
    381,321.44x = 526,220.96 × 211,555.56
  4. Step 4: Simplify right side
    381,321.44x = 111,324,970,792.09
  5. Step 5: Solve for x
    x = 111,324,970,792.09/381,321.44
  6. Step 6: Final answer
    x = 291,945.22

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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.