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Finding the Third Proportional to 213,342 and 330,417

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Solution

The third proportional to 213,342 and 330,417 is: 511,738.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,342 : 330,417 = 330,417 : x
  2. Step 2: Convert to fraction form
    213,342/330,417 = 330,417/x
  3. Step 3: Cross multiply
    213,342x = 330,417 × 330,417
  4. Step 4: Simplify right side
    213,342x = 109,175,393,889
  5. Step 5: Solve for x
    x = 109,175,393,889/213,342
  6. Step 6: Final answer
    x = 511,738.87

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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.