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Finding the Third Proportional to 143,482 and 312,800

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Solution

The third proportional to 143,482 and 312,800 is: 681,924.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,482 : 312,800 = 312,800 : x
  2. Step 2: Convert to fraction form
    143,482/312,800 = 312,800/x
  3. Step 3: Cross multiply
    143,482x = 312,800 × 312,800
  4. Step 4: Simplify right side
    143,482x = 97,843,840,000
  5. Step 5: Solve for x
    x = 97,843,840,000/143,482
  6. Step 6: Final answer
    x = 681,924.14

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.