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Finding the Third Proportional to 280,053 and 418,251

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Solution

The third proportional to 280,053 and 418,251 is: 624,645.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,053 : 418,251 = 418,251 : x
  2. Step 2: Convert to fraction form
    280,053/418,251 = 418,251/x
  3. Step 3: Cross multiply
    280,053x = 418,251 × 418,251
  4. Step 4: Simplify right side
    280,053x = 174,933,899,001
  5. Step 5: Solve for x
    x = 174,933,899,001/280,053
  6. Step 6: Final answer
    x = 624,645.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.