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Finding the Fourth Proportional to 304,951.20, 420,835.14 and 168,987.42

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Solution

The fourth proportional to 304,951.20, 420,835.14 and 168,987.42 is: 233,204.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,951.20 : 420,835.14 = 168,987.42 : x
  2. Step 2: Convert to fraction form
    304,951.20/420,835.14 = 168,987.42/x
  3. Step 3: Cross multiply
    304,951.20x = 420,835.14 × 168,987.42
  4. Step 4: Simplify right side
    304,951.20x = 71,115,844,553.94
  5. Step 5: Solve for x
    x = 71,115,844,553.94/304,951.20
  6. Step 6: Final answer
    x = 233,204.02

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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.