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Finding the Fourth Proportional to 221,393.70, 332,139.15 and 109,127.70

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Solution

The fourth proportional to 221,393.70, 332,139.15 and 109,127.70 is: 163,715.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,393.70 : 332,139.15 = 109,127.70 : x
  2. Step 2: Convert to fraction form
    221,393.70/332,139.15 = 109,127.70/x
  3. Step 3: Cross multiply
    221,393.70x = 332,139.15 × 109,127.70
  4. Step 4: Simplify right side
    221,393.70x = 36,245,581,519.46
  5. Step 5: Solve for x
    x = 36,245,581,519.46/221,393.70
  6. Step 6: Final answer
    x = 163,715.51

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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.