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Finding the Fourth Proportional to 223,418.68, 334,998.42 and 90,189.88

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Solution

The fourth proportional to 223,418.68, 334,998.42 and 90,189.88 is: 135,232.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,418.68 : 334,998.42 = 90,189.88 : x
  2. Step 2: Convert to fraction form
    223,418.68/334,998.42 = 90,189.88/x
  3. Step 3: Cross multiply
    223,418.68x = 334,998.42 × 90,189.88
  4. Step 4: Simplify right side
    223,418.68x = 30,213,467,299.99
  5. Step 5: Solve for x
    x = 30,213,467,299.99/223,418.68
  6. Step 6: Final answer
    x = 135,232.50

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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.