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Finding the Third Proportional to 258,875,408.25 and 556,172,021.25

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Solution

The third proportional to 258,875,408.25 and 556,172,021.25 is: 1,194,888,766.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,875,408.25 : 556,172,021.25 = 556,172,021.25 : x
  2. Step 2: Convert to fraction form
    258,875,408.25/556,172,021.25 = 556,172,021.25/x
  3. Step 3: Cross multiply
    258,875,408.25x = 556,172,021.25 × 556,172,021.25
  4. Step 4: Simplify right side
    258,875,408.25x = 309,327,317,221,310,464
  5. Step 5: Solve for x
    x = 309,327,317,221,310,464/258,875,408.25
  6. Step 6: Final answer
    x = 1,194,888,766.42

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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.