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Finding the Third Proportional to 277,557 and 415,217

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Solution

The third proportional to 277,557 and 415,217 is: 621,152.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,557 : 415,217 = 415,217 : x
  2. Step 2: Convert to fraction form
    277,557/415,217 = 415,217/x
  3. Step 3: Cross multiply
    277,557x = 415,217 × 415,217
  4. Step 4: Simplify right side
    277,557x = 172,405,157,089
  5. Step 5: Solve for x
    x = 172,405,157,089/277,557
  6. Step 6: Final answer
    x = 621,152.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.