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Finding the Fourth Proportional to 304,960.15, 420,858.39 and 168,993.78

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Solution

The fourth proportional to 304,960.15, 420,858.39 and 168,993.78 is: 233,218.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,960.15 : 420,858.39 = 168,993.78 : x
  2. Step 2: Convert to fraction form
    304,960.15/420,858.39 = 168,993.78/x
  3. Step 3: Cross multiply
    304,960.15x = 420,858.39 × 168,993.78
  4. Step 4: Simplify right side
    304,960.15x = 71,122,450,170.81
  5. Step 5: Solve for x
    x = 71,122,450,170.81/304,960.15
  6. Step 6: Final answer
    x = 233,218.83

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1.5x scale

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.