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Finding the Fourth Proportional to 304,656, 420,425.28 and 170,520.96

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Solution

The fourth proportional to 304,656, 420,425.28 and 170,520.96 is: 235,318.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,656 : 420,425.28 = 170,520.96 : x
  2. Step 2: Convert to fraction form
    304,656/420,425.28 = 170,520.96/x
  3. Step 3: Cross multiply
    304,656x = 420,425.28 × 170,520.96
  4. Step 4: Simplify right side
    304,656x = 71,691,322,353.87
  5. Step 5: Solve for x
    x = 71,691,322,353.87/304,656
  6. Step 6: Final answer
    x = 235,318.92

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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.