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Finding the Fourth Proportional to 304,843.15, 420,709.39 and 168,919.73

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Solution

The fourth proportional to 304,843.15, 420,709.39 and 168,919.73 is: 233,123.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,843.15 : 420,709.39 = 168,919.73 : x
  2. Step 2: Convert to fraction form
    304,843.15/420,709.39 = 168,919.73/x
  3. Step 3: Cross multiply
    304,843.15x = 420,709.39 × 168,919.73
  4. Step 4: Simplify right side
    304,843.15x = 71,066,116,567.26
  5. Step 5: Solve for x
    x = 71,066,116,567.26/304,843.15
  6. Step 6: Final answer
    x = 233,123.55

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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.