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Finding the Third Proportional to 143,330 and 311,536

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Solution

The third proportional to 143,330 and 311,536 is: 677,141.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,330 : 311,536 = 311,536 : x
  2. Step 2: Convert to fraction form
    143,330/311,536 = 311,536/x
  3. Step 3: Cross multiply
    143,330x = 311,536 × 311,536
  4. Step 4: Simplify right side
    143,330x = 97,054,679,296
  5. Step 5: Solve for x
    x = 97,054,679,296/143,330
  6. Step 6: Final answer
    x = 677,141.42

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.