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Finding the Fourth Proportional to 221,671.81, 332,554.48 and 71,900.47

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Solution

The fourth proportional to 221,671.81, 332,554.48 and 71,900.47 is: 107,865.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,671.81 : 332,554.48 = 71,900.47 : x
  2. Step 2: Convert to fraction form
    221,671.81/332,554.48 = 71,900.47/x
  3. Step 3: Cross multiply
    221,671.81x = 332,554.48 × 71,900.47
  4. Step 4: Simplify right side
    221,671.81x = 23,910,822,401.47
  5. Step 5: Solve for x
    x = 23,910,822,401.47/221,671.81
  6. Step 6: Final answer
    x = 107,865.87

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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.