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Finding the Fourth Proportional to 351,806.37, 485,491.56 and 190,665.38

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Solution

The fourth proportional to 351,806.37, 485,491.56 and 190,665.38 is: 263,117.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,806.37 : 485,491.56 = 190,665.38 : x
  2. Step 2: Convert to fraction form
    351,806.37/485,491.56 = 190,665.38/x
  3. Step 3: Cross multiply
    351,806.37x = 485,491.56 × 190,665.38
  4. Step 4: Simplify right side
    351,806.37x = 92,566,430,346.74
  5. Step 5: Solve for x
    x = 92,566,430,346.74/351,806.37
  6. Step 6: Final answer
    x = 263,117.55

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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.