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Finding the Fourth Proportional to 464,563.82, 641,185.62 and 303,138.66

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Solution

The fourth proportional to 464,563.82, 641,185.62 and 303,138.66 is: 418,388.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,563.82 : 641,185.62 = 303,138.66 : x
  2. Step 2: Convert to fraction form
    464,563.82/641,185.62 = 303,138.66/x
  3. Step 3: Cross multiply
    464,563.82x = 641,185.62 × 303,138.66
  4. Step 4: Simplify right side
    464,563.82x = 194,368,149,658.07
  5. Step 5: Solve for x
    x = 194,368,149,658.07/464,563.82
  6. Step 6: Final answer
    x = 418,388.48

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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.