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Finding the Third Proportional to 302,860.50 and 440,190

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Solution

The third proportional to 302,860.50 and 440,190 is: 639,790.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,860.50 : 440,190 = 440,190 : x
  2. Step 2: Convert to fraction form
    302,860.50/440,190 = 440,190/x
  3. Step 3: Cross multiply
    302,860.50x = 440,190 × 440,190
  4. Step 4: Simplify right side
    302,860.50x = 193,767,236,100
  5. Step 5: Solve for x
    x = 193,767,236,100/302,860.50
  6. Step 6: Final answer
    x = 639,790.39

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.