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Finding the Fourth Proportional to 262,913.80, 394,467.90 and 253,193.80

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Solution

The fourth proportional to 262,913.80, 394,467.90 and 253,193.80 is: 379,884.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,913.80 : 394,467.90 = 253,193.80 : x
  2. Step 2: Convert to fraction form
    262,913.80/394,467.90 = 253,193.80/x
  3. Step 3: Cross multiply
    262,913.80x = 394,467.90 × 253,193.80
  4. Step 4: Simplify right side
    262,913.80x = 99,876,826,579.02
  5. Step 5: Solve for x
    x = 99,876,826,579.02/262,913.80
  6. Step 6: Final answer
    x = 379,884.31

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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.