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Finding the Third Proportional to 115,358 and 247,120

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Solution

The third proportional to 115,358 and 247,120 is: 529,380.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,358 : 247,120 = 247,120 : x
  2. Step 2: Convert to fraction form
    115,358/247,120 = 247,120/x
  3. Step 3: Cross multiply
    115,358x = 247,120 × 247,120
  4. Step 4: Simplify right side
    115,358x = 61,068,294,400
  5. Step 5: Solve for x
    x = 61,068,294,400/115,358
  6. Step 6: Final answer
    x = 529,380.66

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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.