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Finding the Third Proportional to 276,036.75 and 391,448.25

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Solution

The third proportional to 276,036.75 and 391,448.25 is: 555,113.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,036.75 : 391,448.25 = 391,448.25 : x
  2. Step 2: Convert to fraction form
    276,036.75/391,448.25 = 391,448.25/x
  3. Step 3: Cross multiply
    276,036.75x = 391,448.25 × 391,448.25
  4. Step 4: Simplify right side
    276,036.75x = 153,231,732,428.06
  5. Step 5: Solve for x
    x = 153,231,732,428.06/276,036.75
  6. Step 6: Final answer
    x = 555,113.52

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.