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Finding the Fourth Proportional to 304,939.66, 420,810.44 and 168,972.44

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Solution

The fourth proportional to 304,939.66, 420,810.44 and 168,972.44 is: 233,178.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,939.66 : 420,810.44 = 168,972.44 : x
  2. Step 2: Convert to fraction form
    304,939.66/420,810.44 = 168,972.44/x
  3. Step 3: Cross multiply
    304,939.66x = 420,810.44 × 168,972.44
  4. Step 4: Simplify right side
    304,939.66x = 71,105,366,824.27
  5. Step 5: Solve for x
    x = 71,105,366,824.27/304,939.66
  6. Step 6: Final answer
    x = 233,178.48

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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.