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Finding the Fourth Proportional to 262,968.40, 394,452.60 and 75,998.80

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Solution

The fourth proportional to 262,968.40, 394,452.60 and 75,998.80 is: 113,998.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,968.40 : 394,452.60 = 75,998.80 : x
  2. Step 2: Convert to fraction form
    262,968.40/394,452.60 = 75,998.80/x
  3. Step 3: Cross multiply
    262,968.40x = 394,452.60 × 75,998.80
  4. Step 4: Simplify right side
    262,968.40x = 29,977,924,256.88
  5. Step 5: Solve for x
    x = 29,977,924,256.88/262,968.40
  6. Step 6: Final answer
    x = 113,998.20

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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.