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Finding the Third Proportional to 143,079,909 and 309,929,517

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Solution

The third proportional to 143,079,909 and 309,929,517 is: 671,347,264.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,079,909 : 309,929,517 = 309,929,517 : x
  2. Step 2: Convert to fraction form
    143,079,909/309,929,517 = 309,929,517/x
  3. Step 3: Cross multiply
    143,079,909x = 309,929,517 × 309,929,517
  4. Step 4: Simplify right side
    143,079,909x = 96,056,305,507,853,296
  5. Step 5: Solve for x
    x = 96,056,305,507,853,296/143,079,909
  6. Step 6: Final answer
    x = 671,347,264.47

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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.