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Finding the Third Proportional to 194,400 and 317,436

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Solution

The third proportional to 194,400 and 317,436 is: 518,341.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,400 : 317,436 = 317,436 : x
  2. Step 2: Convert to fraction form
    194,400/317,436 = 317,436/x
  3. Step 3: Cross multiply
    194,400x = 317,436 × 317,436
  4. Step 4: Simplify right side
    194,400x = 100,765,614,096
  5. Step 5: Solve for x
    x = 100,765,614,096/194,400
  6. Step 6: Final answer
    x = 518,341.64

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Why These Related Problems?

These problems maintain the same ratio (1.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.