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Finding the Third Proportional to 74,880 and 163,638

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Solution

The third proportional to 74,880 and 163,638 is: 357,604.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,880 : 163,638 = 163,638 : x
  2. Step 2: Convert to fraction form
    74,880/163,638 = 163,638/x
  3. Step 3: Cross multiply
    74,880x = 163,638 × 163,638
  4. Step 4: Simplify right side
    74,880x = 26,777,395,044
  5. Step 5: Solve for x
    x = 26,777,395,044/74,880
  6. Step 6: Final answer
    x = 357,604.10

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.