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Finding the Fourth Proportional to 262,144.80, 393,217.20 and 222,778.80

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Solution

The fourth proportional to 262,144.80, 393,217.20 and 222,778.80 is: 334,168.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,144.80 : 393,217.20 = 222,778.80 : x
  2. Step 2: Convert to fraction form
    262,144.80/393,217.20 = 222,778.80/x
  3. Step 3: Cross multiply
    262,144.80x = 393,217.20 × 222,778.80
  4. Step 4: Simplify right side
    262,144.80x = 87,600,455,955.36
  5. Step 5: Solve for x
    x = 87,600,455,955.36/262,144.80
  6. Step 6: Final answer
    x = 334,168.20

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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.