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Finding the Fourth Proportional to 221,636.10, 332,238.15 and 126,768.90

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Solution

The fourth proportional to 221,636.10, 332,238.15 and 126,768.90 is: 190,029.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,636.10 : 332,238.15 = 126,768.90 : x
  2. Step 2: Convert to fraction form
    221,636.10/332,238.15 = 126,768.90/x
  3. Step 3: Cross multiply
    221,636.10x = 332,238.15 × 126,768.90
  4. Step 4: Simplify right side
    221,636.10x = 42,117,464,813.54
  5. Step 5: Solve for x
    x = 42,117,464,813.54/221,636.10
  6. Step 6: Final answer
    x = 190,029.80

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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.