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Finding the Fourth Proportional to 298,668.20, 448,002.30 and 132,456.20

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Solution

The fourth proportional to 298,668.20, 448,002.30 and 132,456.20 is: 198,684.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,668.20 : 448,002.30 = 132,456.20 : x
  2. Step 2: Convert to fraction form
    298,668.20/448,002.30 = 132,456.20/x
  3. Step 3: Cross multiply
    298,668.20x = 448,002.30 × 132,456.20
  4. Step 4: Simplify right side
    298,668.20x = 59,340,682,249.26
  5. Step 5: Solve for x
    x = 59,340,682,249.26/298,668.20
  6. Step 6: Final answer
    x = 198,684.30

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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.