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Finding the Fourth Proportional to 221,961.39, 333,051.44 and 137,699.93

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Solution

The fourth proportional to 221,961.39, 333,051.44 and 137,699.93 is: 206,617.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,961.39 : 333,051.44 = 137,699.93 : x
  2. Step 2: Convert to fraction form
    221,961.39/333,051.44 = 137,699.93/x
  3. Step 3: Cross multiply
    221,961.39x = 333,051.44 × 137,699.93
  4. Step 4: Simplify right side
    221,961.39x = 45,861,157,620.64
  5. Step 5: Solve for x
    x = 45,861,157,620.64/221,961.39
  6. Step 6: Final answer
    x = 206,617.73

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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.