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Finding the Fourth Proportional to 393,675.56, 543,302.34 and 223,899.56

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Solution

The fourth proportional to 393,675.56, 543,302.34 and 223,899.56 is: 308,998.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,675.56 : 543,302.34 = 223,899.56 : x
  2. Step 2: Convert to fraction form
    393,675.56/543,302.34 = 223,899.56/x
  3. Step 3: Cross multiply
    393,675.56x = 543,302.34 × 223,899.56
  4. Step 4: Simplify right side
    393,675.56x = 121,645,154,872.97
  5. Step 5: Solve for x
    x = 121,645,154,872.97/393,675.56
  6. Step 6: Final answer
    x = 308,998.49

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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.