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Finding the Third Proportional to 155,358 and 336,636

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Solution

The third proportional to 155,358 and 336,636 is: 729,436.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,358 : 336,636 = 336,636 : x
  2. Step 2: Convert to fraction form
    155,358/336,636 = 336,636/x
  3. Step 3: Cross multiply
    155,358x = 336,636 × 336,636
  4. Step 4: Simplify right side
    155,358x = 113,323,796,496
  5. Step 5: Solve for x
    x = 113,323,796,496/155,358
  6. Step 6: Final answer
    x = 729,436.50

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.