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Finding the Third Proportional to 214,435 and 315,416

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Solution

The third proportional to 214,435 and 315,416 is: 463,950.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,435 : 315,416 = 315,416 : x
  2. Step 2: Convert to fraction form
    214,435/315,416 = 315,416/x
  3. Step 3: Cross multiply
    214,435x = 315,416 × 315,416
  4. Step 4: Simplify right side
    214,435x = 99,487,253,056
  5. Step 5: Solve for x
    x = 99,487,253,056/214,435
  6. Step 6: Final answer
    x = 463,950.63

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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.