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Finding the Fourth Proportional to 394,730.52, 544,695.21 and 222,639

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Solution

The fourth proportional to 394,730.52, 544,695.21 and 222,639 is: 307,223.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,730.52 : 544,695.21 = 222,639 : x
  2. Step 2: Convert to fraction form
    394,730.52/544,695.21 = 222,639/x
  3. Step 3: Cross multiply
    394,730.52x = 544,695.21 × 222,639
  4. Step 4: Simplify right side
    394,730.52x = 121,270,396,859.19
  5. Step 5: Solve for x
    x = 121,270,396,859.19/394,730.52
  6. Step 6: Final answer
    x = 307,223.26

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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.