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Finding the Fourth Proportional to 221,003.84, 331,505.64 and 54,791.84

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Solution

The fourth proportional to 221,003.84, 331,505.64 and 54,791.84 is: 82,187.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,003.84 : 331,505.64 = 54,791.84 : x
  2. Step 2: Convert to fraction form
    221,003.84/331,505.64 = 54,791.84/x
  3. Step 3: Cross multiply
    221,003.84x = 331,505.64 × 54,791.84
  4. Step 4: Simplify right side
    221,003.84x = 18,163,803,985.98
  5. Step 5: Solve for x
    x = 18,163,803,985.98/221,003.84
  6. Step 6: Final answer
    x = 82,187.73

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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.