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Finding the Fourth Proportional to 298,736.91, 448,292.17 and 121,243.90

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Solution

The fourth proportional to 298,736.91, 448,292.17 and 121,243.90 is: 181,941.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,736.91 : 448,292.17 = 121,243.90 : x
  2. Step 2: Convert to fraction form
    298,736.91/448,292.17 = 121,243.90/x
  3. Step 3: Cross multiply
    298,736.91x = 448,292.17 × 121,243.90
  4. Step 4: Simplify right side
    298,736.91x = 54,352,691,532.05
  5. Step 5: Solve for x
    x = 54,352,691,532.05/298,736.91
  6. Step 6: Final answer
    x = 181,941.67

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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.