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Finding the Third Proportional to 257,082 and 553,637

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Solution

The third proportional to 257,082 and 553,637 is: 1,192,280.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,082 : 553,637 = 553,637 : x
  2. Step 2: Convert to fraction form
    257,082/553,637 = 553,637/x
  3. Step 3: Cross multiply
    257,082x = 553,637 × 553,637
  4. Step 4: Simplify right side
    257,082x = 306,513,927,769
  5. Step 5: Solve for x
    x = 306,513,927,769/257,082
  6. Step 6: Final answer
    x = 1,192,280.78

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.