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Finding the Third Proportional to 158,621 and 343,378

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Solution

The third proportional to 158,621 and 343,378 is: 743,334.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,621 : 343,378 = 343,378 : x
  2. Step 2: Convert to fraction form
    158,621/343,378 = 343,378/x
  3. Step 3: Cross multiply
    158,621x = 343,378 × 343,378
  4. Step 4: Simplify right side
    158,621x = 117,908,450,884
  5. Step 5: Solve for x
    x = 117,908,450,884/158,621
  6. Step 6: Final answer
    x = 743,334.43

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.