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Finding the Third Proportional to 290,367 and 439,924

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Solution

The third proportional to 290,367 and 439,924 is: 666,512.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,367 : 439,924 = 439,924 : x
  2. Step 2: Convert to fraction form
    290,367/439,924 = 439,924/x
  3. Step 3: Cross multiply
    290,367x = 439,924 × 439,924
  4. Step 4: Simplify right side
    290,367x = 193,533,125,776
  5. Step 5: Solve for x
    x = 193,533,125,776/290,367
  6. Step 6: Final answer
    x = 666,512.12

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.