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Finding the Third Proportional to 129,932,556 and 288,915,982.50

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Solution

The third proportional to 129,932,556 and 288,915,982.50 is: 642,429,022.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,932,556 : 288,915,982.50 = 288,915,982.50 : x
  2. Step 2: Convert to fraction form
    129,932,556/288,915,982.50 = 288,915,982.50/x
  3. Step 3: Cross multiply
    129,932,556x = 288,915,982.50 × 288,915,982.50
  4. Step 4: Simplify right side
    129,932,556x = 83,472,444,943,940,304
  5. Step 5: Solve for x
    x = 83,472,444,943,940,304/129,932,556
  6. Step 6: Final answer
    x = 642,429,022.51

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.