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Finding the Fourth Proportional to 202,489.20, 279,437.76 and 111,844.89

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Solution

The fourth proportional to 202,489.20, 279,437.76 and 111,844.89 is: 154,347.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,489.20 : 279,437.76 = 111,844.89 : x
  2. Step 2: Convert to fraction form
    202,489.20/279,437.76 = 111,844.89/x
  3. Step 3: Cross multiply
    202,489.20x = 279,437.76 × 111,844.89
  4. Step 4: Simplify right side
    202,489.20x = 31,253,685,529.05
  5. Step 5: Solve for x
    x = 31,253,685,529.05/202,489.20
  6. Step 6: Final answer
    x = 154,347.42

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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.