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Finding the Fourth Proportional to 394,729.77, 544,694.18 and 222,638.25

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Solution

The fourth proportional to 394,729.77, 544,694.18 and 222,638.25 is: 307,222.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,729.77 : 544,694.18 = 222,638.25 : x
  2. Step 2: Convert to fraction form
    394,729.77/544,694.18 = 222,638.25/x
  3. Step 3: Cross multiply
    394,729.77x = 544,694.18 × 222,638.25
  4. Step 4: Simplify right side
    394,729.77x = 121,269,757,907.19
  5. Step 5: Solve for x
    x = 121,269,757,907.19/394,729.77
  6. Step 6: Final answer
    x = 307,222.22

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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.