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Finding the Fourth Proportional to 394,698.42, 544,737.06 and 222,651.72

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Solution

The fourth proportional to 394,698.42, 544,737.06 and 222,651.72 is: 307,289.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,698.42 : 544,737.06 = 222,651.72 : x
  2. Step 2: Convert to fraction form
    394,698.42/544,737.06 = 222,651.72/x
  3. Step 3: Cross multiply
    394,698.42x = 544,737.06 × 222,651.72
  4. Step 4: Simplify right side
    394,698.42x = 121,286,643,356.74
  5. Step 5: Solve for x
    x = 121,286,643,356.74/394,698.42
  6. Step 6: Final answer
    x = 307,289.41

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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.