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Finding the Third Proportional to 129,213 and 283,887

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Solution

The third proportional to 129,213 and 283,887 is: 623,713.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,213 : 283,887 = 283,887 : x
  2. Step 2: Convert to fraction form
    129,213/283,887 = 283,887/x
  3. Step 3: Cross multiply
    129,213x = 283,887 × 283,887
  4. Step 4: Simplify right side
    129,213x = 80,591,828,769
  5. Step 5: Solve for x
    x = 80,591,828,769/129,213
  6. Step 6: Final answer
    x = 623,713.01

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.