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Finding the Fourth Proportional to 304,939.55, 420,825.80 and 168,960.78

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Solution

The fourth proportional to 304,939.55, 420,825.80 and 168,960.78 is: 233,170.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,939.55 : 420,825.80 = 168,960.78 : x
  2. Step 2: Convert to fraction form
    304,939.55/420,825.80 = 168,960.78/x
  3. Step 3: Cross multiply
    304,939.55x = 420,825.80 × 168,960.78
  4. Step 4: Simplify right side
    304,939.55x = 71,103,054,567.32
  5. Step 5: Solve for x
    x = 71,103,054,567.32/304,939.55
  6. Step 6: Final answer
    x = 233,170.99

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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.