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Finding the Fourth Proportional to 391,654.56, 587,512.97 and 167,016.91

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Solution

The fourth proportional to 391,654.56, 587,512.97 and 167,016.91 is: 250,538.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,654.56 : 587,512.97 = 167,016.91 : x
  2. Step 2: Convert to fraction form
    391,654.56/587,512.97 = 167,016.91/x
  3. Step 3: Cross multiply
    391,654.56x = 587,512.97 × 167,016.91
  4. Step 4: Simplify right side
    391,654.56x = 98,124,599,999.24
  5. Step 5: Solve for x
    x = 98,124,599,999.24/391,654.56
  6. Step 6: Final answer
    x = 250,538.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.