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Finding the Fourth Proportional to 304,907.53, 420,754.78 and 168,933.42

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Solution

The fourth proportional to 304,907.53, 420,754.78 and 168,933.42 is: 233,118.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,907.53 : 420,754.78 = 168,933.42 : x
  2. Step 2: Convert to fraction form
    304,907.53/420,754.78 = 168,933.42/x
  3. Step 3: Cross multiply
    304,907.53x = 420,754.78 × 168,933.42
  4. Step 4: Simplify right side
    304,907.53x = 71,079,543,966.75
  5. Step 5: Solve for x
    x = 71,079,543,966.75/304,907.53
  6. Step 6: Final answer
    x = 233,118.36

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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.