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Finding the Third Proportional to 255,826.75 and 391,537.75

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Solution

The third proportional to 255,826.75 and 391,537.75 is: 599,240.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,826.75 : 391,537.75 = 391,537.75 : x
  2. Step 2: Convert to fraction form
    255,826.75/391,537.75 = 391,537.75/x
  3. Step 3: Cross multiply
    255,826.75x = 391,537.75 × 391,537.75
  4. Step 4: Simplify right side
    255,826.75x = 153,301,809,675.06
  5. Step 5: Solve for x
    x = 153,301,809,675.06/255,826.75
  6. Step 6: Final answer
    x = 599,240.73

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.