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Finding the Fourth Proportional to 298,371.42, 447,557.13 and 87,992.96

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Solution

The fourth proportional to 298,371.42, 447,557.13 and 87,992.96 is: 131,989.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,371.42 : 447,557.13 = 87,992.96 : x
  2. Step 2: Convert to fraction form
    298,371.42/447,557.13 = 87,992.96/x
  3. Step 3: Cross multiply
    298,371.42x = 447,557.13 × 87,992.96
  4. Step 4: Simplify right side
    298,371.42x = 39,381,874,400.02
  5. Step 5: Solve for x
    x = 39,381,874,400.02/298,371.42
  6. Step 6: Final answer
    x = 131,989.43

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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.