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Finding the Fourth Proportional to 262,869.30, 394,401.15 and 253,149.30

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Solution

The fourth proportional to 262,869.30, 394,401.15 and 253,149.30 is: 379,817.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,869.30 : 394,401.15 = 253,149.30 : x
  2. Step 2: Convert to fraction form
    262,869.30/394,401.15 = 253,149.30/x
  3. Step 3: Cross multiply
    262,869.30x = 394,401.15 × 253,149.30
  4. Step 4: Simplify right side
    262,869.30x = 99,842,375,041.70
  5. Step 5: Solve for x
    x = 99,842,375,041.70/262,869.30
  6. Step 6: Final answer
    x = 379,817.56

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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.