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Finding the Third Proportional to 141,286 and 211,931

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Solution

The third proportional to 141,286 and 211,931 is: 317,899.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,286 : 211,931 = 211,931 : x
  2. Step 2: Convert to fraction form
    141,286/211,931 = 211,931/x
  3. Step 3: Cross multiply
    141,286x = 211,931 × 211,931
  4. Step 4: Simplify right side
    141,286x = 44,914,748,761
  5. Step 5: Solve for x
    x = 44,914,748,761/141,286
  6. Step 6: Final answer
    x = 317,899.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.