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Finding the Fourth Proportional to 351,474, 485,033.40 and 190,329

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Solution

The fourth proportional to 351,474, 485,033.40 and 190,329 is: 262,653.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,474 : 485,033.40 = 190,329 : x
  2. Step 2: Convert to fraction form
    351,474/485,033.40 = 190,329/x
  3. Step 3: Cross multiply
    351,474x = 485,033.40 × 190,329
  4. Step 4: Simplify right side
    351,474x = 92,315,921,988.60
  5. Step 5: Solve for x
    x = 92,315,921,988.60/351,474
  6. Step 6: Final answer
    x = 262,653.63

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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.