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Finding the Fourth Proportional to 298,372.17, 447,558.26 and 87,993.71

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Solution

The fourth proportional to 298,372.17, 447,558.26 and 87,993.71 is: 131,990.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,372.17 : 447,558.26 = 87,993.71 : x
  2. Step 2: Convert to fraction form
    298,372.17/447,558.26 = 87,993.71/x
  3. Step 3: Cross multiply
    298,372.17x = 447,558.26 × 87,993.71
  4. Step 4: Simplify right side
    298,372.17x = 39,382,309,060.78
  5. Step 5: Solve for x
    x = 39,382,309,060.78/298,372.17
  6. Step 6: Final answer
    x = 131,990.56

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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.