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Finding the Third Proportional to 151,442 and 318,582

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Solution

The third proportional to 151,442 and 318,582 is: 670,187.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,442 : 318,582 = 318,582 : x
  2. Step 2: Convert to fraction form
    151,442/318,582 = 318,582/x
  3. Step 3: Cross multiply
    151,442x = 318,582 × 318,582
  4. Step 4: Simplify right side
    151,442x = 101,494,490,724
  5. Step 5: Solve for x
    x = 101,494,490,724/151,442
  6. Step 6: Final answer
    x = 670,187.21

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.