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Finding the Fourth Proportional to 223,493.10, 308,420.40 and 122,891.10

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Solution

The fourth proportional to 223,493.10, 308,420.40 and 122,891.10 is: 169,589.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,493.10 : 308,420.40 = 122,891.10 : x
  2. Step 2: Convert to fraction form
    223,493.10/308,420.40 = 122,891.10/x
  3. Step 3: Cross multiply
    223,493.10x = 308,420.40 × 122,891.10
  4. Step 4: Simplify right side
    223,493.10x = 37,902,122,218.44
  5. Step 5: Solve for x
    x = 37,902,122,218.44/223,493.10
  6. Step 6: Final answer
    x = 169,589.68

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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.