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Finding the Third Proportional to 215,856 and 330,364.13

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Solution

The third proportional to 215,856 and 330,364.13 is: 505,616.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,856 : 330,364.13 = 330,364.13 : x
  2. Step 2: Convert to fraction form
    215,856/330,364.13 = 330,364.13/x
  3. Step 3: Cross multiply
    215,856x = 330,364.13 × 330,364.13
  4. Step 4: Simplify right side
    215,856x = 109,140,455,087.02
  5. Step 5: Solve for x
    x = 109,140,455,087.02/215,856
  6. Step 6: Final answer
    x = 505,616.96

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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.