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Finding the Third Proportional to 213,108.75 and 330,868.13

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Solution

The third proportional to 213,108.75 and 330,868.13 is: 513,698.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,108.75 : 330,868.13 = 330,868.13 : x
  2. Step 2: Convert to fraction form
    213,108.75/330,868.13 = 330,868.13/x
  3. Step 3: Cross multiply
    213,108.75x = 330,868.13 × 330,868.13
  4. Step 4: Simplify right side
    213,108.75x = 109,473,716,141.02
  5. Step 5: Solve for x
    x = 109,473,716,141.02/213,108.75
  6. Step 6: Final answer
    x = 513,698.83

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.