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Finding the Third Proportional to 199,134 and 315,472

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Solution

The third proportional to 199,134 and 315,472 is: 499,776.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,134 : 315,472 = 315,472 : x
  2. Step 2: Convert to fraction form
    199,134/315,472 = 315,472/x
  3. Step 3: Cross multiply
    199,134x = 315,472 × 315,472
  4. Step 4: Simplify right side
    199,134x = 99,522,582,784
  5. Step 5: Solve for x
    x = 99,522,582,784/199,134
  6. Step 6: Final answer
    x = 499,776.95

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.