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Finding the Fourth Proportional to 304,578.42, 420,313.19 and 168,609.57

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Solution

The fourth proportional to 304,578.42, 420,313.19 and 168,609.57 is: 232,678.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,578.42 : 420,313.19 = 168,609.57 : x
  2. Step 2: Convert to fraction form
    304,578.42/420,313.19 = 168,609.57/x
  3. Step 3: Cross multiply
    304,578.42x = 420,313.19 × 168,609.57
  4. Step 4: Simplify right side
    304,578.42x = 70,868,825,388.18
  5. Step 5: Solve for x
    x = 70,868,825,388.18/304,578.42
  6. Step 6: Final answer
    x = 232,678.42

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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.