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Finding the Fourth Proportional to 305,234.20, 421,249.82 and 177,907.06

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Solution

The fourth proportional to 305,234.20, 421,249.82 and 177,907.06 is: 245,527.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,234.20 : 421,249.82 = 177,907.06 : x
  2. Step 2: Convert to fraction form
    305,234.20/421,249.82 = 177,907.06/x
  3. Step 3: Cross multiply
    305,234.20x = 421,249.82 × 177,907.06
  4. Step 4: Simplify right side
    305,234.20x = 74,943,317,001.73
  5. Step 5: Solve for x
    x = 74,943,317,001.73/305,234.20
  6. Step 6: Final answer
    x = 245,527.26

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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.