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Finding the Fourth Proportional to 221,772.70, 306,049.28 and 126,279.77

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Solution

The fourth proportional to 221,772.70, 306,049.28 and 126,279.77 is: 174,267.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,772.70 : 306,049.28 = 126,279.77 : x
  2. Step 2: Convert to fraction form
    221,772.70/306,049.28 = 126,279.77/x
  3. Step 3: Cross multiply
    221,772.70x = 306,049.28 × 126,279.77
  4. Step 4: Simplify right side
    221,772.70x = 38,647,832,687.07
  5. Step 5: Solve for x
    x = 38,647,832,687.07/221,772.70
  6. Step 6: Final answer
    x = 174,267.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.