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Finding the Third Proportional to 289,834.50 and 436,939.50

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Solution

The third proportional to 289,834.50 and 436,939.50 is: 658,707.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,834.50 : 436,939.50 = 436,939.50 : x
  2. Step 2: Convert to fraction form
    289,834.50/436,939.50 = 436,939.50/x
  3. Step 3: Cross multiply
    289,834.50x = 436,939.50 × 436,939.50
  4. Step 4: Simplify right side
    289,834.50x = 190,916,126,660.25
  5. Step 5: Solve for x
    x = 190,916,126,660.25/289,834.50
  6. Step 6: Final answer
    x = 658,707.39

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.