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Finding the Fourth Proportional to 221,287.61, 331,930.91 and 94,845.87

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Solution

The fourth proportional to 221,287.61, 331,930.91 and 94,845.87 is: 142,268.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,287.61 : 331,930.91 = 94,845.87 : x
  2. Step 2: Convert to fraction form
    221,287.61/331,930.91 = 94,845.87/x
  3. Step 3: Cross multiply
    221,287.61x = 331,930.91 × 94,845.87
  4. Step 4: Simplify right side
    221,287.61x = 31,482,276,175.96
  5. Step 5: Solve for x
    x = 31,482,276,175.96/221,287.61
  6. Step 6: Final answer
    x = 142,268.59

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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.