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Finding the Third Proportional to 66,818 and 155,369

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Solution

The third proportional to 66,818 and 155,369 is: 361,272.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,818 : 155,369 = 155,369 : x
  2. Step 2: Convert to fraction form
    66,818/155,369 = 155,369/x
  3. Step 3: Cross multiply
    66,818x = 155,369 × 155,369
  4. Step 4: Simplify right side
    66,818x = 24,139,526,161
  5. Step 5: Solve for x
    x = 24,139,526,161/66,818
  6. Step 6: Final answer
    x = 361,272.80

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Why These Related Problems?

These problems maintain the same ratio (2.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.