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Finding the Third Proportional to 248,916 and 377,990

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Solution

The third proportional to 248,916 and 377,990 is: 573,994.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,916 : 377,990 = 377,990 : x
  2. Step 2: Convert to fraction form
    248,916/377,990 = 377,990/x
  3. Step 3: Cross multiply
    248,916x = 377,990 × 377,990
  4. Step 4: Simplify right side
    248,916x = 142,876,440,100
  5. Step 5: Solve for x
    x = 142,876,440,100/248,916
  6. Step 6: Final answer
    x = 573,994.60

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.