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Finding the Third Proportional to 156,600 and 209,772

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Solution

The third proportional to 156,600 and 209,772 is: 280,998.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,600 : 209,772 = 209,772 : x
  2. Step 2: Convert to fraction form
    156,600/209,772 = 209,772/x
  3. Step 3: Cross multiply
    156,600x = 209,772 × 209,772
  4. Step 4: Simplify right side
    156,600x = 44,004,291,984
  5. Step 5: Solve for x
    x = 44,004,291,984/156,600
  6. Step 6: Final answer
    x = 280,998.03

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.