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Finding the Fourth Proportional to 304,930.80, 420,798.21 and 168,963.56

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Solution

The fourth proportional to 304,930.80, 420,798.21 and 168,963.56 is: 233,166.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,930.80 : 420,798.21 = 168,963.56 : x
  2. Step 2: Convert to fraction form
    304,930.80/420,798.21 = 168,963.56/x
  3. Step 3: Cross multiply
    304,930.80x = 420,798.21 × 168,963.56
  4. Step 4: Simplify right side
    304,930.80x = 71,099,561,499.24
  5. Step 5: Solve for x
    x = 71,099,561,499.24/304,930.80
  6. Step 6: Final answer
    x = 233,166.22

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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.