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Finding the Fourth Proportional to 304,634.55, 420,408.81 and 168,668.49

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Solution

The fourth proportional to 304,634.55, 420,408.81 and 168,668.49 is: 232,769.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,634.55 : 420,408.81 = 168,668.49 : x
  2. Step 2: Convert to fraction form
    304,634.55/420,408.81 = 168,668.49/x
  3. Step 3: Cross multiply
    304,634.55x = 420,408.81 × 168,668.49
  4. Step 4: Simplify right side
    304,634.55x = 70,909,716,720.35
  5. Step 5: Solve for x
    x = 70,909,716,720.35/304,634.55
  6. Step 6: Final answer
    x = 232,769.78

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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.