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Finding the Third Proportional to 121,647,421 and 251,917,636.50

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Solution

The third proportional to 121,647,421 and 251,917,636.50 is: 521,692,075.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,647,421 : 251,917,636.50 = 251,917,636.50 : x
  2. Step 2: Convert to fraction form
    121,647,421/251,917,636.50 = 251,917,636.50/x
  3. Step 3: Cross multiply
    121,647,421x = 251,917,636.50 × 251,917,636.50
  4. Step 4: Simplify right side
    121,647,421x = 63,462,495,579,746,136
  5. Step 5: Solve for x
    x = 63,462,495,579,746,136/121,647,421
  6. Step 6: Final answer
    x = 521,692,075.82

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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.