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Finding the Third Proportional to 275,516.44 and 421,483.50

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Solution

The third proportional to 275,516.44 and 421,483.50 is: 644,783.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,516.44 : 421,483.50 = 421,483.50 : x
  2. Step 2: Convert to fraction form
    275,516.44/421,483.50 = 421,483.50/x
  3. Step 3: Cross multiply
    275,516.44x = 421,483.50 × 421,483.50
  4. Step 4: Simplify right side
    275,516.44x = 177,648,340,772.25
  5. Step 5: Solve for x
    x = 177,648,340,772.25/275,516.44
  6. Step 6: Final answer
    x = 644,783.09

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.