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Finding the Third Proportional to 131,815 and 310,868

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Solution

The third proportional to 131,815 and 310,868 is: 733,140.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,815 : 310,868 = 310,868 : x
  2. Step 2: Convert to fraction form
    131,815/310,868 = 310,868/x
  3. Step 3: Cross multiply
    131,815x = 310,868 × 310,868
  4. Step 4: Simplify right side
    131,815x = 96,638,913,424
  5. Step 5: Solve for x
    x = 96,638,913,424/131,815
  6. Step 6: Final answer
    x = 733,140.49

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.