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Finding the Third Proportional to 309,703.50 and 436,132.50

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Solution

The third proportional to 309,703.50 and 436,132.50 is: 614,173.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,703.50 : 436,132.50 = 436,132.50 : x
  2. Step 2: Convert to fraction form
    309,703.50/436,132.50 = 436,132.50/x
  3. Step 3: Cross multiply
    309,703.50x = 436,132.50 × 436,132.50
  4. Step 4: Simplify right side
    309,703.50x = 190,211,557,556.25
  5. Step 5: Solve for x
    x = 190,211,557,556.25/309,703.50
  6. Step 6: Final answer
    x = 614,173.10

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.