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Finding the Fourth Proportional to 394,728.55, 544,692.50 and 222,637.03

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Solution

The fourth proportional to 394,728.55, 544,692.50 and 222,637.03 is: 307,220.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,728.55 : 544,692.50 = 222,637.03 : x
  2. Step 2: Convert to fraction form
    394,728.55/544,692.50 = 222,637.03/x
  3. Step 3: Cross multiply
    394,728.55x = 544,692.50 × 222,637.03
  4. Step 4: Simplify right side
    394,728.55x = 121,268,717,988.36
  5. Step 5: Solve for x
    x = 121,268,717,988.36/394,728.55
  6. Step 6: Final answer
    x = 307,220.54

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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.