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Finding the Fourth Proportional to 304,786.62, 420,590.79 and 168,825.42

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Solution

The fourth proportional to 304,786.62, 420,590.79 and 168,825.42 is: 232,970.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,786.62 : 420,590.79 = 168,825.42 : x
  2. Step 2: Convert to fraction form
    304,786.62/420,590.79 = 168,825.42/x
  3. Step 3: Cross multiply
    304,786.62x = 420,590.79 × 168,825.42
  4. Step 4: Simplify right side
    304,786.62x = 71,006,416,769.88
  5. Step 5: Solve for x
    x = 71,006,416,769.88/304,786.62
  6. Step 6: Final answer
    x = 232,970.91

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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.