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Finding the Third Proportional to 126,899,456 and 272,208,640

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Solution

The third proportional to 126,899,456 and 272,208,640 is: 583,907,496.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,899,456 : 272,208,640 = 272,208,640 : x
  2. Step 2: Convert to fraction form
    126,899,456/272,208,640 = 272,208,640/x
  3. Step 3: Cross multiply
    126,899,456x = 272,208,640 × 272,208,640
  4. Step 4: Simplify right side
    126,899,456x = 74,097,543,690,649,600
  5. Step 5: Solve for x
    x = 74,097,543,690,649,600/126,899,456
  6. Step 6: Final answer
    x = 583,907,496.74

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.