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Finding the Fourth Proportional to 221,453.80, 332,180.70 and 215,621.80

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Solution

The fourth proportional to 221,453.80, 332,180.70 and 215,621.80 is: 323,432.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,453.80 : 332,180.70 = 215,621.80 : x
  2. Step 2: Convert to fraction form
    221,453.80/332,180.70 = 215,621.80/x
  3. Step 3: Cross multiply
    221,453.80x = 332,180.70 × 215,621.80
  4. Step 4: Simplify right side
    221,453.80x = 71,625,400,459.26
  5. Step 5: Solve for x
    x = 71,625,400,459.26/221,453.80
  6. Step 6: Final answer
    x = 323,432.70

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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.