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Finding the Fourth Proportional to 223,749.36, 308,720.22 and 131,872.31

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Solution

The fourth proportional to 223,749.36, 308,720.22 and 131,872.31 is: 181,952.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,749.36 : 308,720.22 = 131,872.31 : x
  2. Step 2: Convert to fraction form
    223,749.36/308,720.22 = 131,872.31/x
  3. Step 3: Cross multiply
    223,749.36x = 308,720.22 × 131,872.31
  4. Step 4: Simplify right side
    223,749.36x = 40,711,647,011.51
  5. Step 5: Solve for x
    x = 40,711,647,011.51/223,749.36
  6. Step 6: Final answer
    x = 181,952.02

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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.