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Finding the Fourth Proportional to 304,849.20, 420,687.36 and 168,882.87

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Solution

The fourth proportional to 304,849.20, 420,687.36 and 168,882.87 is: 233,055.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,849.20 : 420,687.36 = 168,882.87 : x
  2. Step 2: Convert to fraction form
    304,849.20/420,687.36 = 168,882.87/x
  3. Step 3: Cross multiply
    304,849.20x = 420,687.36 × 168,882.87
  4. Step 4: Simplify right side
    304,849.20x = 71,046,888,729.52
  5. Step 5: Solve for x
    x = 71,046,888,729.52/304,849.20
  6. Step 6: Final answer
    x = 233,055.85

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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.