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Finding the Fourth Proportional to 262,849.80, 394,371.90 and 253,129.80

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Solution

The fourth proportional to 262,849.80, 394,371.90 and 253,129.80 is: 379,788.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,849.80 : 394,371.90 = 253,129.80 : x
  2. Step 2: Convert to fraction form
    262,849.80/394,371.90 = 253,129.80/x
  3. Step 3: Cross multiply
    262,849.80x = 394,371.90 × 253,129.80
  4. Step 4: Simplify right side
    262,849.80x = 99,827,280,172.62
  5. Step 5: Solve for x
    x = 99,827,280,172.62/262,849.80
  6. Step 6: Final answer
    x = 379,788.31

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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.