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Finding the Third Proportional to 356,754.38 and 489,204.56

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Solution

The third proportional to 356,754.38 and 489,204.56 is: 670,828.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,754.38 : 489,204.56 = 489,204.56 : x
  2. Step 2: Convert to fraction form
    356,754.38/489,204.56 = 489,204.56/x
  3. Step 3: Cross multiply
    356,754.38x = 489,204.56 × 489,204.56
  4. Step 4: Simplify right side
    356,754.38x = 239,321,103,970.82
  5. Step 5: Solve for x
    x = 239,321,103,970.82/356,754.38
  6. Step 6: Final answer
    x = 670,828.79

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.