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Finding the Third Proportional to 155,008 and 219,397

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Solution

The third proportional to 155,008 and 219,397 is: 310,532.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,008 : 219,397 = 219,397 : x
  2. Step 2: Convert to fraction form
    155,008/219,397 = 219,397/x
  3. Step 3: Cross multiply
    155,008x = 219,397 × 219,397
  4. Step 4: Simplify right side
    155,008x = 48,135,043,609
  5. Step 5: Solve for x
    x = 48,135,043,609/155,008
  6. Step 6: Final answer
    x = 310,532.64

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.