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Finding the Fourth Proportional to 304,839.16, 420,673.61 and 168,872.87

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Solution

The fourth proportional to 304,839.16, 420,673.61 and 168,872.87 is: 233,042.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,839.16 : 420,673.61 = 168,872.87 : x
  2. Step 2: Convert to fraction form
    304,839.16/420,673.61 = 168,872.87/x
  3. Step 3: Cross multiply
    304,839.16x = 420,673.61 × 168,872.87
  4. Step 4: Simplify right side
    304,839.16x = 71,040,359,009.60
  5. Step 5: Solve for x
    x = 71,040,359,009.60/304,839.16
  6. Step 6: Final answer
    x = 233,042.11

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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.