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Finding the Fourth Proportional to 221,039.55, 331,611.17 and 87,927.39

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Solution

The fourth proportional to 221,039.55, 331,611.17 and 87,927.39 is: 131,911.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,039.55 : 331,611.17 = 87,927.39 : x
  2. Step 2: Convert to fraction form
    221,039.55/331,611.17 = 87,927.39/x
  3. Step 3: Cross multiply
    221,039.55x = 331,611.17 × 87,927.39
  4. Step 4: Simplify right side
    221,039.55x = 29,157,704,233.31
  5. Step 5: Solve for x
    x = 29,157,704,233.31/221,039.55
  6. Step 6: Final answer
    x = 131,911.71

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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.