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Finding the Third Proportional to 156,726 and 220,222

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Solution

The third proportional to 156,726 and 220,222 is: 309,442.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,726 : 220,222 = 220,222 : x
  2. Step 2: Convert to fraction form
    156,726/220,222 = 220,222/x
  3. Step 3: Cross multiply
    156,726x = 220,222 × 220,222
  4. Step 4: Simplify right side
    156,726x = 48,497,729,284
  5. Step 5: Solve for x
    x = 48,497,729,284/156,726
  6. Step 6: Final answer
    x = 309,442.78

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.