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Finding the Third Proportional to 166,521 and 253,953

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Solution

The third proportional to 166,521 and 253,953 is: 387,291.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,521 : 253,953 = 253,953 : x
  2. Step 2: Convert to fraction form
    166,521/253,953 = 253,953/x
  3. Step 3: Cross multiply
    166,521x = 253,953 × 253,953
  4. Step 4: Simplify right side
    166,521x = 64,492,126,209
  5. Step 5: Solve for x
    x = 64,492,126,209/166,521
  6. Step 6: Final answer
    x = 387,291.25

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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.