Home / 391,979.16-587,778.60-229,917.48

Finding the Fourth Proportional to 391,979.16, 587,778.60 and 229,917.48

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Solution

The fourth proportional to 391,979.16, 587,778.60 and 229,917.48 is: 344,764.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,979.16 : 587,778.60 = 229,917.48 : x
  2. Step 2: Convert to fraction form
    391,979.16/587,778.60 = 229,917.48/x
  3. Step 3: Cross multiply
    391,979.16x = 587,778.60 × 229,917.48
  4. Step 4: Simplify right side
    391,979.16x = 135,140,574,509.93
  5. Step 5: Solve for x
    x = 135,140,574,509.93/391,979.16
  6. Step 6: Final answer
    x = 344,764.69

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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.