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Finding the Fourth Proportional to 321,227.40, 481,841.10 and 196,811.40

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Solution

The fourth proportional to 321,227.40, 481,841.10 and 196,811.40 is: 295,217.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,227.40 : 481,841.10 = 196,811.40 : x
  2. Step 2: Convert to fraction form
    321,227.40/481,841.10 = 196,811.40/x
  3. Step 3: Cross multiply
    321,227.40x = 481,841.10 × 196,811.40
  4. Step 4: Simplify right side
    321,227.40x = 94,831,821,468.54
  5. Step 5: Solve for x
    x = 94,831,821,468.54/321,227.40
  6. Step 6: Final answer
    x = 295,217.10

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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.