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Finding the Third Proportional to 309,220 and 441,006

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Solution

The third proportional to 309,220 and 441,006 is: 628,957.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,220 : 441,006 = 441,006 : x
  2. Step 2: Convert to fraction form
    309,220/441,006 = 441,006/x
  3. Step 3: Cross multiply
    309,220x = 441,006 × 441,006
  4. Step 4: Simplify right side
    309,220x = 194,486,292,036
  5. Step 5: Solve for x
    x = 194,486,292,036/309,220
  6. Step 6: Final answer
    x = 628,957.67

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.