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Finding the Fourth Proportional to 298,151.91, 447,324.35 and 87,790.95

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Solution

The fourth proportional to 298,151.91, 447,324.35 and 87,790.95 is: 131,714.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,151.91 : 447,324.35 = 87,790.95 : x
  2. Step 2: Convert to fraction form
    298,151.91/447,324.35 = 87,790.95/x
  3. Step 3: Cross multiply
    298,151.91x = 447,324.35 × 87,790.95
  4. Step 4: Simplify right side
    298,151.91x = 39,271,029,205.68
  5. Step 5: Solve for x
    x = 39,271,029,205.68/298,151.91
  6. Step 6: Final answer
    x = 131,714.83

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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.