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Finding the Fourth Proportional to 223,687.12, 335,604.48 and 90,679.24

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Solution

The fourth proportional to 223,687.12, 335,604.48 and 90,679.24 is: 136,048.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,687.12 : 335,604.48 = 90,679.24 : x
  2. Step 2: Convert to fraction form
    223,687.12/335,604.48 = 90,679.24/x
  3. Step 3: Cross multiply
    223,687.12x = 335,604.48 × 90,679.24
  4. Step 4: Simplify right side
    223,687.12x = 30,432,359,187.00
  5. Step 5: Solve for x
    x = 30,432,359,187.00/223,687.12
  6. Step 6: Final answer
    x = 136,048.78

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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.