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Finding the Third Proportional to 143,099 and 310,780

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Solution

The third proportional to 143,099 and 310,780 is: 674,946.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,099 : 310,780 = 310,780 : x
  2. Step 2: Convert to fraction form
    143,099/310,780 = 310,780/x
  3. Step 3: Cross multiply
    143,099x = 310,780 × 310,780
  4. Step 4: Simplify right side
    143,099x = 96,584,208,400
  5. Step 5: Solve for x
    x = 96,584,208,400/143,099
  6. Step 6: Final answer
    x = 674,946.77

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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.