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Finding the Fourth Proportional to 221,452.20, 332,178.30 and 212,704.20

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Solution

The fourth proportional to 221,452.20, 332,178.30 and 212,704.20 is: 319,056.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,452.20 : 332,178.30 = 212,704.20 : x
  2. Step 2: Convert to fraction form
    221,452.20/332,178.30 = 212,704.20/x
  3. Step 3: Cross multiply
    221,452.20x = 332,178.30 × 212,704.20
  4. Step 4: Simplify right side
    221,452.20x = 70,655,719,558.86
  5. Step 5: Solve for x
    x = 70,655,719,558.86/221,452.20
  6. Step 6: Final answer
    x = 319,056.30

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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.