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Finding the Fourth Proportional to 221,480.60, 332,220.90 and 81,293.90

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Solution

The fourth proportional to 221,480.60, 332,220.90 and 81,293.90 is: 121,940.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,480.60 : 332,220.90 = 81,293.90 : x
  2. Step 2: Convert to fraction form
    221,480.60/332,220.90 = 81,293.90/x
  3. Step 3: Cross multiply
    221,480.60x = 332,220.90 × 81,293.90
  4. Step 4: Simplify right side
    221,480.60x = 27,007,532,622.51
  5. Step 5: Solve for x
    x = 27,007,532,622.51/221,480.60
  6. Step 6: Final answer
    x = 121,940.85

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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.