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Finding the Fourth Proportional to 307,940.70, 461,133.45 and 245,732.70

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Solution

The fourth proportional to 307,940.70, 461,133.45 and 245,732.70 is: 367,978.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,940.70 : 461,133.45 = 245,732.70 : x
  2. Step 2: Convert to fraction form
    307,940.70/461,133.45 = 245,732.70/x
  3. Step 3: Cross multiply
    307,940.70x = 461,133.45 × 245,732.70
  4. Step 4: Simplify right side
    307,940.70x = 113,315,567,728.82
  5. Step 5: Solve for x
    x = 113,315,567,728.82/307,940.70
  6. Step 6: Final answer
    x = 367,978.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.