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Finding the Fourth Proportional to 202,574.40, 279,553.20 and 111,932.88

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Solution

The fourth proportional to 202,574.40, 279,553.20 and 111,932.88 is: 154,467.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,574.40 : 279,553.20 = 111,932.88 : x
  2. Step 2: Convert to fraction form
    202,574.40/279,553.20 = 111,932.88/x
  3. Step 3: Cross multiply
    202,574.40x = 279,553.20 × 111,932.88
  4. Step 4: Simplify right side
    202,574.40x = 31,291,194,789.22
  5. Step 5: Solve for x
    x = 31,291,194,789.22/202,574.40
  6. Step 6: Final answer
    x = 154,467.67

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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.