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Finding the Fourth Proportional to 394,496.83, 544,378.31 and 222,420.94

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Solution

The fourth proportional to 394,496.83, 544,378.31 and 222,420.94 is: 306,925.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,496.83 : 544,378.31 = 222,420.94 : x
  2. Step 2: Convert to fraction form
    394,496.83/544,378.31 = 222,420.94/x
  3. Step 3: Cross multiply
    394,496.83x = 544,378.31 × 222,420.94
  4. Step 4: Simplify right side
    394,496.83x = 121,081,134,017.25
  5. Step 5: Solve for x
    x = 121,081,134,017.25/394,496.83
  6. Step 6: Final answer
    x = 306,925.49

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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.