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Finding the Fourth Proportional to 263,287.84, 394,013.04 and 215,348.80

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Solution

The fourth proportional to 263,287.84, 394,013.04 and 215,348.80 is: 322,271.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,287.84 : 394,013.04 = 215,348.80 : x
  2. Step 2: Convert to fraction form
    263,287.84/394,013.04 = 215,348.80/x
  3. Step 3: Cross multiply
    263,287.84x = 394,013.04 × 215,348.80
  4. Step 4: Simplify right side
    263,287.84x = 84,850,235,348.35
  5. Step 5: Solve for x
    x = 84,850,235,348.35/263,287.84
  6. Step 6: Final answer
    x = 322,271.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.