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Finding the Fourth Proportional to 223,693.89, 335,540.80 and 81,549.82

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Solution

The fourth proportional to 223,693.89, 335,540.80 and 81,549.82 is: 122,324.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,693.89 : 335,540.80 = 81,549.82 : x
  2. Step 2: Convert to fraction form
    223,693.89/335,540.80 = 81,549.82/x
  3. Step 3: Cross multiply
    223,693.89x = 335,540.80 × 81,549.82
  4. Step 4: Simplify right side
    223,693.89x = 27,363,291,842.66
  5. Step 5: Solve for x
    x = 27,363,291,842.66/223,693.89
  6. Step 6: Final answer
    x = 122,324.72

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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.