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Finding the Fourth Proportional to 221,480.10, 332,220.15 and 81,293.40

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Solution

The fourth proportional to 221,480.10, 332,220.15 and 81,293.40 is: 121,940.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,480.10 : 332,220.15 = 81,293.40 : x
  2. Step 2: Convert to fraction form
    221,480.10/332,220.15 = 81,293.40/x
  3. Step 3: Cross multiply
    221,480.10x = 332,220.15 × 81,293.40
  4. Step 4: Simplify right side
    221,480.10x = 27,007,305,542.01
  5. Step 5: Solve for x
    x = 27,007,305,542.01/221,480.10
  6. Step 6: Final answer
    x = 121,940.10

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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.