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Finding the Third Proportional to 258,815 and 553,610

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Solution

The third proportional to 258,815 and 553,610 is: 1,184,181.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,815 : 553,610 = 553,610 : x
  2. Step 2: Convert to fraction form
    258,815/553,610 = 553,610/x
  3. Step 3: Cross multiply
    258,815x = 553,610 × 553,610
  4. Step 4: Simplify right side
    258,815x = 306,484,032,100
  5. Step 5: Solve for x
    x = 306,484,032,100/258,815
  6. Step 6: Final answer
    x = 1,184,181.88

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.