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Finding the Fourth Proportional to 221,453.40, 332,180.10 and 121,920.60

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Solution

The fourth proportional to 221,453.40, 332,180.10 and 121,920.60 is: 182,880.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,453.40 : 332,180.10 = 121,920.60 : x
  2. Step 2: Convert to fraction form
    221,453.40/332,180.10 = 121,920.60/x
  3. Step 3: Cross multiply
    221,453.40x = 332,180.10 × 121,920.60
  4. Step 4: Simplify right side
    221,453.40x = 40,499,597,100.06
  5. Step 5: Solve for x
    x = 40,499,597,100.06/221,453.40
  6. Step 6: Final answer
    x = 182,880.90

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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.