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Finding the Fourth Proportional to 394,507.44, 544,392.92 and 222,431.56

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Solution

The fourth proportional to 394,507.44, 544,392.92 and 222,431.56 is: 306,940.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,507.44 : 544,392.92 = 222,431.56 : x
  2. Step 2: Convert to fraction form
    394,507.44/544,392.92 = 222,431.56/x
  3. Step 3: Cross multiply
    394,507.44x = 544,392.92 × 222,431.56
  4. Step 4: Simplify right side
    394,507.44x = 121,090,165,643.65
  5. Step 5: Solve for x
    x = 121,090,165,643.65/394,507.44
  6. Step 6: Final answer
    x = 306,940.13

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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.