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Finding the Third Proportional to 157,819.50 and 221,985.75

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Solution

The third proportional to 157,819.50 and 221,985.75 is: 312,240.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,819.50 : 221,985.75 = 221,985.75 : x
  2. Step 2: Convert to fraction form
    157,819.50/221,985.75 = 221,985.75/x
  3. Step 3: Cross multiply
    157,819.50x = 221,985.75 × 221,985.75
  4. Step 4: Simplify right side
    157,819.50x = 49,277,673,203.06
  5. Step 5: Solve for x
    x = 49,277,673,203.06/157,819.50
  6. Step 6: Final answer
    x = 312,240.71

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.