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Finding the Third Proportional to 76,347 and 162,840

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Solution

The third proportional to 76,347 and 162,840 is: 347,320.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,347 : 162,840 = 162,840 : x
  2. Step 2: Convert to fraction form
    76,347/162,840 = 162,840/x
  3. Step 3: Cross multiply
    76,347x = 162,840 × 162,840
  4. Step 4: Simplify right side
    76,347x = 26,516,865,600
  5. Step 5: Solve for x
    x = 26,516,865,600/76,347
  6. Step 6: Final answer
    x = 347,320.33

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.