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Finding the Fourth Proportional to 298,738.91, 448,295.17 and 121,245.90

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Solution

The fourth proportional to 298,738.91, 448,295.17 and 121,245.90 is: 181,944.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,738.91 : 448,295.17 = 121,245.90 : x
  2. Step 2: Convert to fraction form
    298,738.91/448,295.17 = 121,245.90/x
  3. Step 3: Cross multiply
    298,738.91x = 448,295.17 × 121,245.90
  4. Step 4: Simplify right side
    298,738.91x = 54,353,951,352.30
  5. Step 5: Solve for x
    x = 54,353,951,352.30/298,738.91
  6. Step 6: Final answer
    x = 181,944.67

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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.