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Finding the Fourth Proportional to 322,491.06, 445,001.50 and 193,434.78

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Solution

The fourth proportional to 322,491.06, 445,001.50 and 193,434.78 is: 266,918.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,491.06 : 445,001.50 = 193,434.78 : x
  2. Step 2: Convert to fraction form
    322,491.06/445,001.50 = 193,434.78/x
  3. Step 3: Cross multiply
    322,491.06x = 445,001.50 × 193,434.78
  4. Step 4: Simplify right side
    322,491.06x = 86,078,769,162.72
  5. Step 5: Solve for x
    x = 86,078,769,162.72/322,491.06
  6. Step 6: Final answer
    x = 266,918.31

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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.