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Finding the Fourth Proportional to 298,151.16, 447,323.22 and 87,790.20

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Solution

The fourth proportional to 298,151.16, 447,323.22 and 87,790.20 is: 131,713.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,151.16 : 447,323.22 = 87,790.20 : x
  2. Step 2: Convert to fraction form
    298,151.16/447,323.22 = 87,790.20/x
  3. Step 3: Cross multiply
    298,151.16x = 447,323.22 × 87,790.20
  4. Step 4: Simplify right side
    298,151.16x = 39,270,594,948.44
  5. Step 5: Solve for x
    x = 39,270,594,948.44/298,151.16
  6. Step 6: Final answer
    x = 131,713.71

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1.5x scale

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.