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Finding the Fourth Proportional to 253,447.52, 379,855.22 and 221,782.37

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Solution

The fourth proportional to 253,447.52, 379,855.22 and 221,782.37 is: 332,396.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,447.52 : 379,855.22 = 221,782.37 : x
  2. Step 2: Convert to fraction form
    253,447.52/379,855.22 = 221,782.37/x
  3. Step 3: Cross multiply
    253,447.52x = 379,855.22 × 221,782.37
  4. Step 4: Simplify right side
    253,447.52x = 84,245,187,940.28
  5. Step 5: Solve for x
    x = 84,245,187,940.28/253,447.52
  6. Step 6: Final answer
    x = 332,396.98

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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.