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Finding the Third Proportional to 255,586.50 and 386,961.75

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Solution

The third proportional to 255,586.50 and 386,961.75 is: 585,865.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,586.50 : 386,961.75 = 386,961.75 : x
  2. Step 2: Convert to fraction form
    255,586.50/386,961.75 = 386,961.75/x
  3. Step 3: Cross multiply
    255,586.50x = 386,961.75 × 386,961.75
  4. Step 4: Simplify right side
    255,586.50x = 149,739,395,963.06
  5. Step 5: Solve for x
    x = 149,739,395,963.06/255,586.50
  6. Step 6: Final answer
    x = 585,865.83

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.