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Finding the Fourth Proportional to 304,972.70, 420,879.17 and 169,003.80

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Solution

The fourth proportional to 304,972.70, 420,879.17 and 169,003.80 is: 233,234.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,972.70 : 420,879.17 = 169,003.80 : x
  2. Step 2: Convert to fraction form
    304,972.70/420,879.17 = 169,003.80/x
  3. Step 3: Cross multiply
    304,972.70x = 420,879.17 × 169,003.80
  4. Step 4: Simplify right side
    304,972.70x = 71,130,179,493.36
  5. Step 5: Solve for x
    x = 71,130,179,493.36/304,972.70
  6. Step 6: Final answer
    x = 233,234.58

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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.