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Finding the Fourth Proportional to 221,157.52, 331,736.60 and 67,284.84

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Solution

The fourth proportional to 221,157.52, 331,736.60 and 67,284.84 is: 100,927.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,157.52 : 331,736.60 = 67,284.84 : x
  2. Step 2: Convert to fraction form
    221,157.52/331,736.60 = 67,284.84/x
  3. Step 3: Cross multiply
    221,157.52x = 331,736.60 × 67,284.84
  4. Step 4: Simplify right side
    221,157.52x = 22,320,844,053.14
  5. Step 5: Solve for x
    x = 22,320,844,053.14/221,157.52
  6. Step 6: Final answer
    x = 100,927.36

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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.