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Finding the Fourth Proportional to 262,915.20, 394,401.60 and 254,620.80

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Solution

The fourth proportional to 262,915.20, 394,401.60 and 254,620.80 is: 381,959.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,915.20 : 394,401.60 = 254,620.80 : x
  2. Step 2: Convert to fraction form
    262,915.20/394,401.60 = 254,620.80/x
  3. Step 3: Cross multiply
    262,915.20x = 394,401.60 × 254,620.80
  4. Step 4: Simplify right side
    262,915.20x = 100,422,850,913.28
  5. Step 5: Solve for x
    x = 100,422,850,913.28/262,915.20
  6. Step 6: Final answer
    x = 381,959.09

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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.