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Finding the Third Proportional to 115,909 and 253,960

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Solution

The third proportional to 115,909 and 253,960 is: 556,433.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,909 : 253,960 = 253,960 : x
  2. Step 2: Convert to fraction form
    115,909/253,960 = 253,960/x
  3. Step 3: Cross multiply
    115,909x = 253,960 × 253,960
  4. Step 4: Simplify right side
    115,909x = 64,495,681,600
  5. Step 5: Solve for x
    x = 64,495,681,600/115,909
  6. Step 6: Final answer
    x = 556,433.77

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.