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Finding the Third Proportional to 143,767 and 312,630

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Solution

The third proportional to 143,767 and 312,630 is: 679,832.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,767 : 312,630 = 312,630 : x
  2. Step 2: Convert to fraction form
    143,767/312,630 = 312,630/x
  3. Step 3: Cross multiply
    143,767x = 312,630 × 312,630
  4. Step 4: Simplify right side
    143,767x = 97,737,516,900
  5. Step 5: Solve for x
    x = 97,737,516,900/143,767
  6. Step 6: Final answer
    x = 679,832.76

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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.