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Finding the Third Proportional to 210,691.13 and 330,156

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Solution

The third proportional to 210,691.13 and 330,156 is: 517,359.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,691.13 : 330,156 = 330,156 : x
  2. Step 2: Convert to fraction form
    210,691.13/330,156 = 330,156/x
  3. Step 3: Cross multiply
    210,691.13x = 330,156 × 330,156
  4. Step 4: Simplify right side
    210,691.13x = 109,002,984,336
  5. Step 5: Solve for x
    x = 109,002,984,336/210,691.13
  6. Step 6: Final answer
    x = 517,359.16

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.