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Finding the Third Proportional to 121,802,445 and 287,441,397

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Solution

The third proportional to 121,802,445 and 287,441,397 is: 678,332,497.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,802,445 : 287,441,397 = 287,441,397 : x
  2. Step 2: Convert to fraction form
    121,802,445/287,441,397 = 287,441,397/x
  3. Step 3: Cross multiply
    121,802,445x = 287,441,397 × 287,441,397
  4. Step 4: Simplify right side
    121,802,445x = 82,622,556,709,311,616
  5. Step 5: Solve for x
    x = 82,622,556,709,311,616/121,802,445
  6. Step 6: Final answer
    x = 678,332,497.42

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.