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Finding the Third Proportional to 128,083,391 and 275,619,418

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Solution

The third proportional to 128,083,391 and 275,619,418 is: 593,098,472.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,083,391 : 275,619,418 = 275,619,418 : x
  2. Step 2: Convert to fraction form
    128,083,391/275,619,418 = 275,619,418/x
  3. Step 3: Cross multiply
    128,083,391x = 275,619,418 × 275,619,418
  4. Step 4: Simplify right side
    128,083,391x = 75,966,063,578,658,720
  5. Step 5: Solve for x
    x = 75,966,063,578,658,720/128,083,391
  6. Step 6: Final answer
    x = 593,098,472.69

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.