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Finding the Fourth Proportional to 394,605.28, 544,583.08 and 222,538.64

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Solution

The fourth proportional to 394,605.28, 544,583.08 and 222,538.64 is: 307,119.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,605.28 : 544,583.08 = 222,538.64 : x
  2. Step 2: Convert to fraction form
    394,605.28/544,583.08 = 222,538.64/x
  3. Step 3: Cross multiply
    394,605.28x = 544,583.08 × 222,538.64
  4. Step 4: Simplify right side
    394,605.28x = 121,190,777,990.21
  5. Step 5: Solve for x
    x = 121,190,777,990.21/394,605.28
  6. Step 6: Final answer
    x = 307,119.00

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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.