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Finding the Third Proportional to 156,921 and 348,713

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Solution

The third proportional to 156,921 and 348,713 is: 774,917.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,921 : 348,713 = 348,713 : x
  2. Step 2: Convert to fraction form
    156,921/348,713 = 348,713/x
  3. Step 3: Cross multiply
    156,921x = 348,713 × 348,713
  4. Step 4: Simplify right side
    156,921x = 121,600,756,369
  5. Step 5: Solve for x
    x = 121,600,756,369/156,921
  6. Step 6: Final answer
    x = 774,917.04

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.