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Finding the Fourth Proportional to 262,938.80, 394,408.20 and 192,090.80

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Solution

The fourth proportional to 262,938.80, 394,408.20 and 192,090.80 is: 288,136.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,938.80 : 394,408.20 = 192,090.80 : x
  2. Step 2: Convert to fraction form
    262,938.80/394,408.20 = 192,090.80/x
  3. Step 3: Cross multiply
    262,938.80x = 394,408.20 × 192,090.80
  4. Step 4: Simplify right side
    262,938.80x = 75,762,186,664.56
  5. Step 5: Solve for x
    x = 75,762,186,664.56/262,938.80
  6. Step 6: Final answer
    x = 288,136.20

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1.5x scale

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.