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Finding the Third Proportional to 277,503 and 415,140

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Solution

The third proportional to 277,503 and 415,140 is: 621,042.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,503 : 415,140 = 415,140 : x
  2. Step 2: Convert to fraction form
    277,503/415,140 = 415,140/x
  3. Step 3: Cross multiply
    277,503x = 415,140 × 415,140
  4. Step 4: Simplify right side
    277,503x = 172,341,219,600
  5. Step 5: Solve for x
    x = 172,341,219,600/277,503
  6. Step 6: Final answer
    x = 621,042.73

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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.