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Finding the Third Proportional to 156,987 and 343,317

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Solution

The third proportional to 156,987 and 343,317 is: 750,804.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,987 : 343,317 = 343,317 : x
  2. Step 2: Convert to fraction form
    156,987/343,317 = 343,317/x
  3. Step 3: Cross multiply
    156,987x = 343,317 × 343,317
  4. Step 4: Simplify right side
    156,987x = 117,866,562,489
  5. Step 5: Solve for x
    x = 117,866,562,489/156,987
  6. Step 6: Final answer
    x = 750,804.60

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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.