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Finding the Third Proportional to 161,087 and 247,220

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Solution

The third proportional to 161,087 and 247,220 is: 379,408.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,087 : 247,220 = 247,220 : x
  2. Step 2: Convert to fraction form
    161,087/247,220 = 247,220/x
  3. Step 3: Cross multiply
    161,087x = 247,220 × 247,220
  4. Step 4: Simplify right side
    161,087x = 61,117,728,400
  5. Step 5: Solve for x
    x = 61,117,728,400/161,087
  6. Step 6: Final answer
    x = 379,408.20

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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.