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Finding the Third Proportional to 380,208 and 531,558

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Solution

The third proportional to 380,208 and 531,558 is: 743,156.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,208 : 531,558 = 531,558 : x
  2. Step 2: Convert to fraction form
    380,208/531,558 = 531,558/x
  3. Step 3: Cross multiply
    380,208x = 531,558 × 531,558
  4. Step 4: Simplify right side
    380,208x = 282,553,907,364
  5. Step 5: Solve for x
    x = 282,553,907,364/380,208
  6. Step 6: Final answer
    x = 743,156.13

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.