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Finding the Fourth Proportional to 304,836.39, 420,674.15 and 168,879.17

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Solution

The fourth proportional to 304,836.39, 420,674.15 and 168,879.17 is: 233,053.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,836.39 : 420,674.15 = 168,879.17 : x
  2. Step 2: Convert to fraction form
    304,836.39/420,674.15 = 168,879.17/x
  3. Step 3: Cross multiply
    304,836.39x = 420,674.15 × 168,879.17
  4. Step 4: Simplify right side
    304,836.39x = 71,043,098,344.69
  5. Step 5: Solve for x
    x = 71,043,098,344.69/304,836.39
  6. Step 6: Final answer
    x = 233,053.21

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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.