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Finding the Third Proportional to 319,518 and 501,219

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Solution

The third proportional to 319,518 and 501,219 is: 786,248.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,518 : 501,219 = 501,219 : x
  2. Step 2: Convert to fraction form
    319,518/501,219 = 501,219/x
  3. Step 3: Cross multiply
    319,518x = 501,219 × 501,219
  4. Step 4: Simplify right side
    319,518x = 251,220,485,961
  5. Step 5: Solve for x
    x = 251,220,485,961/319,518
  6. Step 6: Final answer
    x = 786,248.31

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.