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Finding the Fourth Proportional to 223,914.28, 308,998.02 and 123,321.64

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Solution

The fourth proportional to 223,914.28, 308,998.02 and 123,321.64 is: 170,181.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,914.28 : 308,998.02 = 123,321.64 : x
  2. Step 2: Convert to fraction form
    223,914.28/308,998.02 = 123,321.64/x
  3. Step 3: Cross multiply
    223,914.28x = 308,998.02 × 123,321.64
  4. Step 4: Simplify right side
    223,914.28x = 38,106,142,583.15
  5. Step 5: Solve for x
    x = 38,106,142,583.15/223,914.28
  6. Step 6: Final answer
    x = 170,181.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.