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Finding the Third Proportional to 258,787 and 563,137

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Solution

The third proportional to 258,787 and 563,137 is: 1,225,421.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,787 : 563,137 = 563,137 : x
  2. Step 2: Convert to fraction form
    258,787/563,137 = 563,137/x
  3. Step 3: Cross multiply
    258,787x = 563,137 × 563,137
  4. Step 4: Simplify right side
    258,787x = 317,123,280,769
  5. Step 5: Solve for x
    x = 317,123,280,769/258,787
  6. Step 6: Final answer
    x = 1,225,421.99

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.