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Finding the Third Proportional to 201,834 and 312,316

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Solution

The third proportional to 201,834 and 312,316 is: 483,274.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,834 : 312,316 = 312,316 : x
  2. Step 2: Convert to fraction form
    201,834/312,316 = 312,316/x
  3. Step 3: Cross multiply
    201,834x = 312,316 × 312,316
  4. Step 4: Simplify right side
    201,834x = 97,541,283,856
  5. Step 5: Solve for x
    x = 97,541,283,856/201,834
  6. Step 6: Final answer
    x = 483,274.79

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.