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Finding the Fourth Proportional to 298,370.40, 447,556.72 and 120,880.80

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Solution

The fourth proportional to 298,370.40, 447,556.72 and 120,880.80 is: 181,321.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,370.40 : 447,556.72 = 120,880.80 : x
  2. Step 2: Convert to fraction form
    298,370.40/447,556.72 = 120,880.80/x
  3. Step 3: Cross multiply
    298,370.40x = 447,556.72 × 120,880.80
  4. Step 4: Simplify right side
    298,370.40x = 54,101,014,358.98
  5. Step 5: Solve for x
    x = 54,101,014,358.98/298,370.40
  6. Step 6: Final answer
    x = 181,321.65

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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.