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Finding the Third Proportional to 121,638,693 and 251,900,544

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Solution

The third proportional to 121,638,693 and 251,900,544 is: 521,658,713.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,638,693 : 251,900,544 = 251,900,544 : x
  2. Step 2: Convert to fraction form
    121,638,693/251,900,544 = 251,900,544/x
  3. Step 3: Cross multiply
    121,638,693x = 251,900,544 × 251,900,544
  4. Step 4: Simplify right side
    121,638,693x = 63,453,884,067,495,936
  5. Step 5: Solve for x
    x = 63,453,884,067,495,936/121,638,693
  6. Step 6: Final answer
    x = 521,658,713.21

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.