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Finding the Fourth Proportional to 321,951.75, 444,039.89 and 285,197.27

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Solution

The fourth proportional to 321,951.75, 444,039.89 and 285,197.27 is: 393,347.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,951.75 : 444,039.89 = 285,197.27 : x
  2. Step 2: Convert to fraction form
    321,951.75/444,039.89 = 285,197.27/x
  3. Step 3: Cross multiply
    321,951.75x = 444,039.89 × 285,197.27
  4. Step 4: Simplify right side
    321,951.75x = 126,638,964,854.87
  5. Step 5: Solve for x
    x = 126,638,964,854.87/321,951.75
  6. Step 6: Final answer
    x = 393,347.66

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1.5x scale

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.