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Finding the Third Proportional to 191,728 and 403,328

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Solution

The third proportional to 191,728 and 403,328 is: 848,459.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,728 : 403,328 = 403,328 : x
  2. Step 2: Convert to fraction form
    191,728/403,328 = 403,328/x
  3. Step 3: Cross multiply
    191,728x = 403,328 × 403,328
  4. Step 4: Simplify right side
    191,728x = 162,673,475,584
  5. Step 5: Solve for x
    x = 162,673,475,584/191,728
  6. Step 6: Final answer
    x = 848,459.67

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.