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Finding the Third Proportional to 256,870 and 554,463

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Solution

The third proportional to 256,870 and 554,463 is: 1,196,828.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,870 : 554,463 = 554,463 : x
  2. Step 2: Convert to fraction form
    256,870/554,463 = 554,463/x
  3. Step 3: Cross multiply
    256,870x = 554,463 × 554,463
  4. Step 4: Simplify right side
    256,870x = 307,429,218,369
  5. Step 5: Solve for x
    x = 307,429,218,369/256,870
  6. Step 6: Final answer
    x = 1,196,828.04

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.