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Finding the Third Proportional to 156,710 and 339,664

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Solution

The third proportional to 156,710 and 339,664 is: 736,211.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,710 : 339,664 = 339,664 : x
  2. Step 2: Convert to fraction form
    156,710/339,664 = 339,664/x
  3. Step 3: Cross multiply
    156,710x = 339,664 × 339,664
  4. Step 4: Simplify right side
    156,710x = 115,371,632,896
  5. Step 5: Solve for x
    x = 115,371,632,896/156,710
  6. Step 6: Final answer
    x = 736,211.05

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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.