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Finding the Third Proportional to 311,880 and 482,724

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Solution

The third proportional to 311,880 and 482,724 is: 747,154.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,880 : 482,724 = 482,724 : x
  2. Step 2: Convert to fraction form
    311,880/482,724 = 482,724/x
  3. Step 3: Cross multiply
    311,880x = 482,724 × 482,724
  4. Step 4: Simplify right side
    311,880x = 233,022,460,176
  5. Step 5: Solve for x
    x = 233,022,460,176/311,880
  6. Step 6: Final answer
    x = 747,154.23

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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.