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Finding the Fourth Proportional to 221,751.10, 332,738.07 and 103,431.70

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Solution

The fourth proportional to 221,751.10, 332,738.07 and 103,431.70 is: 155,199.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,751.10 : 332,738.07 = 103,431.70 : x
  2. Step 2: Convert to fraction form
    221,751.10/332,738.07 = 103,431.70/x
  3. Step 3: Cross multiply
    221,751.10x = 332,738.07 × 103,431.70
  4. Step 4: Simplify right side
    221,751.10x = 34,415,664,234.82
  5. Step 5: Solve for x
    x = 34,415,664,234.82/221,751.10
  6. Step 6: Final answer
    x = 155,199.52

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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.