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Finding the Fourth Proportional to 394,486.74, 544,439.34 and 222,437.88

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Solution

The fourth proportional to 394,486.74, 544,439.34 and 222,437.88 is: 306,991.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,486.74 : 544,439.34 = 222,437.88 : x
  2. Step 2: Convert to fraction form
    394,486.74/544,439.34 = 222,437.88/x
  3. Step 3: Cross multiply
    394,486.74x = 544,439.34 × 222,437.88
  4. Step 4: Simplify right side
    394,486.74x = 121,103,932,578.20
  5. Step 5: Solve for x
    x = 121,103,932,578.20/394,486.74
  6. Step 6: Final answer
    x = 306,991.14

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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.