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Finding the Third Proportional to 155,370 and 338,419

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Solution

The third proportional to 155,370 and 338,419 is: 737,126.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,370 : 338,419 = 338,419 : x
  2. Step 2: Convert to fraction form
    155,370/338,419 = 338,419/x
  3. Step 3: Cross multiply
    155,370x = 338,419 × 338,419
  4. Step 4: Simplify right side
    155,370x = 114,527,419,561
  5. Step 5: Solve for x
    x = 114,527,419,561/155,370
  6. Step 6: Final answer
    x = 737,126.98

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.