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Finding the Fourth Proportional to 479,266.40, 661,353.46 and 269,744.85

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Solution

The fourth proportional to 479,266.40, 661,353.46 and 269,744.85 is: 372,228.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,266.40 : 661,353.46 = 269,744.85 : x
  2. Step 2: Convert to fraction form
    479,266.40/661,353.46 = 269,744.85/x
  3. Step 3: Cross multiply
    479,266.40x = 661,353.46 × 269,744.85
  4. Step 4: Simplify right side
    479,266.40x = 178,396,689,190.32
  5. Step 5: Solve for x
    x = 178,396,689,190.32/479,266.40
  6. Step 6: Final answer
    x = 372,228.66

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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.