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Finding the Third Proportional to 253,203 and 391,935

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Solution

The third proportional to 253,203 and 391,935 is: 606,679.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,203 : 391,935 = 391,935 : x
  2. Step 2: Convert to fraction form
    253,203/391,935 = 391,935/x
  3. Step 3: Cross multiply
    253,203x = 391,935 × 391,935
  4. Step 4: Simplify right side
    253,203x = 153,613,044,225
  5. Step 5: Solve for x
    x = 153,613,044,225/253,203
  6. Step 6: Final answer
    x = 606,679.40

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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.