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Finding the Third Proportional to 214,728 and 315,530

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Solution

The third proportional to 214,728 and 315,530 is: 463,652.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,728 : 315,530 = 315,530 : x
  2. Step 2: Convert to fraction form
    214,728/315,530 = 315,530/x
  3. Step 3: Cross multiply
    214,728x = 315,530 × 315,530
  4. Step 4: Simplify right side
    214,728x = 99,559,180,900
  5. Step 5: Solve for x
    x = 99,559,180,900/214,728
  6. Step 6: Final answer
    x = 463,652.53

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.