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Finding the Third Proportional to 191,661 and 280,521

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Solution

The third proportional to 191,661 and 280,521 is: 410,579.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,661 : 280,521 = 280,521 : x
  2. Step 2: Convert to fraction form
    191,661/280,521 = 280,521/x
  3. Step 3: Cross multiply
    191,661x = 280,521 × 280,521
  4. Step 4: Simplify right side
    191,661x = 78,692,031,441
  5. Step 5: Solve for x
    x = 78,692,031,441/191,661
  6. Step 6: Final answer
    x = 410,579.26

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.