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Finding the Third Proportional to 205,617.87 and 306,715.36

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Solution

The third proportional to 205,617.87 and 306,715.36 is: 457,520.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,617.87 : 306,715.36 = 306,715.36 : x
  2. Step 2: Convert to fraction form
    205,617.87/306,715.36 = 306,715.36/x
  3. Step 3: Cross multiply
    205,617.87x = 306,715.36 × 306,715.36
  4. Step 4: Simplify right side
    205,617.87x = 94,074,311,676.54
  5. Step 5: Solve for x
    x = 94,074,311,676.54/205,617.87
  6. Step 6: Final answer
    x = 457,520.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.