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Finding the Third Proportional to 208,285 and 431,339

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Solution

The third proportional to 208,285 and 431,339 is: 893,263.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,285 : 431,339 = 431,339 : x
  2. Step 2: Convert to fraction form
    208,285/431,339 = 431,339/x
  3. Step 3: Cross multiply
    208,285x = 431,339 × 431,339
  4. Step 4: Simplify right side
    208,285x = 186,053,332,921
  5. Step 5: Solve for x
    x = 186,053,332,921/208,285
  6. Step 6: Final answer
    x = 893,263.24

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.