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Finding the Fourth Proportional to 394,722.30, 544,722.51 and 222,648.47

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Solution

The fourth proportional to 394,722.30, 544,722.51 and 222,648.47 is: 307,258.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,722.30 : 544,722.51 = 222,648.47 : x
  2. Step 2: Convert to fraction form
    394,722.30/544,722.51 = 222,648.47/x
  3. Step 3: Cross multiply
    394,722.30x = 544,722.51 × 222,648.47
  4. Step 4: Simplify right side
    394,722.30x = 121,281,630,702.45
  5. Step 5: Solve for x
    x = 121,281,630,702.45/394,722.30
  6. Step 6: Final answer
    x = 307,258.12

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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.