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Finding the Fourth Proportional to 351,496.48, 485,065.62 and 190,351.78

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Solution

The fourth proportional to 351,496.48, 485,065.62 and 190,351.78 is: 262,685.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,496.48 : 485,065.62 = 190,351.78 : x
  2. Step 2: Convert to fraction form
    351,496.48/485,065.62 = 190,351.78/x
  3. Step 3: Cross multiply
    351,496.48x = 485,065.62 × 190,351.78
  4. Step 4: Simplify right side
    351,496.48x = 92,333,104,183.80
  5. Step 5: Solve for x
    x = 92,333,104,183.80/351,496.48
  6. Step 6: Final answer
    x = 262,685.72

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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.