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Finding the Third Proportional to 156,640 and 348,160

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Solution

The third proportional to 156,640 and 348,160 is: 773,846.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,640 : 348,160 = 348,160 : x
  2. Step 2: Convert to fraction form
    156,640/348,160 = 348,160/x
  3. Step 3: Cross multiply
    156,640x = 348,160 × 348,160
  4. Step 4: Simplify right side
    156,640x = 121,215,385,600
  5. Step 5: Solve for x
    x = 121,215,385,600/156,640
  6. Step 6: Final answer
    x = 773,846.95

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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.