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Finding the Fourth Proportional to 304,836.64, 420,674.49 and 168,879.42

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Solution

The fourth proportional to 304,836.64, 420,674.49 and 168,879.42 is: 233,053.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,836.64 : 420,674.49 = 168,879.42 : x
  2. Step 2: Convert to fraction form
    304,836.64/420,674.49 = 168,879.42/x
  3. Step 3: Cross multiply
    304,836.64x = 420,674.49 × 168,879.42
  4. Step 4: Simplify right side
    304,836.64x = 71,043,263,880.00
  5. Step 5: Solve for x
    x = 71,043,263,880.00/304,836.64
  6. Step 6: Final answer
    x = 233,053.56

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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.