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Finding the Fourth Proportional to 221,422.60, 332,133.90 and 200,427.40

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Solution

The fourth proportional to 221,422.60, 332,133.90 and 200,427.40 is: 300,641.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,422.60 : 332,133.90 = 200,427.40 : x
  2. Step 2: Convert to fraction form
    221,422.60/332,133.90 = 200,427.40/x
  3. Step 3: Cross multiply
    221,422.60x = 332,133.90 × 200,427.40
  4. Step 4: Simplify right side
    221,422.60x = 66,568,734,028.86
  5. Step 5: Solve for x
    x = 66,568,734,028.86/221,422.60
  6. Step 6: Final answer
    x = 300,641.10

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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.