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Finding the Third Proportional to 121,647,423 and 251,917,641

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Solution

The third proportional to 121,647,423 and 251,917,641 is: 521,692,085.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,647,423 : 251,917,641 = 251,917,641 : x
  2. Step 2: Convert to fraction form
    121,647,423/251,917,641 = 251,917,641/x
  3. Step 3: Cross multiply
    121,647,423x = 251,917,641 × 251,917,641
  4. Step 4: Simplify right side
    121,647,423x = 63,462,497,847,004,880
  5. Step 5: Solve for x
    x = 63,462,497,847,004,880/121,647,423
  6. Step 6: Final answer
    x = 521,692,085.88

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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.