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Finding the Third Proportional to 100,352 and 209,009

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Solution

The third proportional to 100,352 and 209,009 is: 435,315.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,352 : 209,009 = 209,009 : x
  2. Step 2: Convert to fraction form
    100,352/209,009 = 209,009/x
  3. Step 3: Cross multiply
    100,352x = 209,009 × 209,009
  4. Step 4: Simplify right side
    100,352x = 43,684,762,081
  5. Step 5: Solve for x
    x = 43,684,762,081/100,352
  6. Step 6: Final answer
    x = 435,315.31

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.