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Finding the Third Proportional to 143,102 and 310,786

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Solution

The third proportional to 143,102 and 310,786 is: 674,958.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,102 : 310,786 = 310,786 : x
  2. Step 2: Convert to fraction form
    143,102/310,786 = 310,786/x
  3. Step 3: Cross multiply
    143,102x = 310,786 × 310,786
  4. Step 4: Simplify right side
    143,102x = 96,587,937,796
  5. Step 5: Solve for x
    x = 96,587,937,796/143,102
  6. Step 6: Final answer
    x = 674,958.69

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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.