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Finding the Third Proportional to 213,656 and 332,139

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Solution

The third proportional to 213,656 and 332,139 is: 516,326.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,656 : 332,139 = 332,139 : x
  2. Step 2: Convert to fraction form
    213,656/332,139 = 332,139/x
  3. Step 3: Cross multiply
    213,656x = 332,139 × 332,139
  4. Step 4: Simplify right side
    213,656x = 110,316,315,321
  5. Step 5: Solve for x
    x = 110,316,315,321/213,656
  6. Step 6: Final answer
    x = 516,326.78

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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.