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Finding the Fourth Proportional to 221,609.60, 332,187.60 and 109,116.80

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Solution

The fourth proportional to 221,609.60, 332,187.60 and 109,116.80 is: 163,563.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,609.60 : 332,187.60 = 109,116.80 : x
  2. Step 2: Convert to fraction form
    221,609.60/332,187.60 = 109,116.80/x
  3. Step 3: Cross multiply
    221,609.60x = 332,187.60 × 109,116.80
  4. Step 4: Simplify right side
    221,609.60x = 36,247,247,911.68
  5. Step 5: Solve for x
    x = 36,247,247,911.68/221,609.60
  6. Step 6: Final answer
    x = 163,563.53

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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.