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Finding the Fourth Proportional to 190,279.53, 285,362.39 and 119,309.96

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Solution

The fourth proportional to 190,279.53, 285,362.39 and 119,309.96 is: 178,929.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,279.53 : 285,362.39 = 119,309.96 : x
  2. Step 2: Convert to fraction form
    190,279.53/285,362.39 = 119,309.96/x
  3. Step 3: Cross multiply
    190,279.53x = 285,362.39 × 119,309.96
  4. Step 4: Simplify right side
    190,279.53x = 34,046,576,348.09
  5. Step 5: Solve for x
    x = 34,046,576,348.09/190,279.53
  6. Step 6: Final answer
    x = 178,929.26

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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.