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Finding the Third Proportional to 205,923.09 and 421,880.91

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Solution

The third proportional to 205,923.09 and 421,880.91 is: 864,320.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,923.09 : 421,880.91 = 421,880.91 : x
  2. Step 2: Convert to fraction form
    205,923.09/421,880.91 = 421,880.91/x
  3. Step 3: Cross multiply
    205,923.09x = 421,880.91 × 421,880.91
  4. Step 4: Simplify right side
    205,923.09x = 177,983,499,058.32
  5. Step 5: Solve for x
    x = 177,983,499,058.32/205,923.09
  6. Step 6: Final answer
    x = 864,320.25

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.