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Finding the Third Proportional to 156,090 and 331,617

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Solution

The third proportional to 156,090 and 331,617 is: 704,528.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,090 : 331,617 = 331,617 : x
  2. Step 2: Convert to fraction form
    156,090/331,617 = 331,617/x
  3. Step 3: Cross multiply
    156,090x = 331,617 × 331,617
  4. Step 4: Simplify right side
    156,090x = 109,969,834,689
  5. Step 5: Solve for x
    x = 109,969,834,689/156,090
  6. Step 6: Final answer
    x = 704,528.38

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.