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Finding the Fourth Proportional to 351,660.30, 485,290.64 and 190,519.44

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Solution

The fourth proportional to 351,660.30, 485,290.64 and 190,519.44 is: 262,916.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,660.30 : 485,290.64 = 190,519.44 : x
  2. Step 2: Convert to fraction form
    351,660.30/485,290.64 = 190,519.44/x
  3. Step 3: Cross multiply
    351,660.30x = 485,290.64 × 190,519.44
  4. Step 4: Simplify right side
    351,660.30x = 92,457,300,970.04
  5. Step 5: Solve for x
    x = 92,457,300,970.04/351,660.30
  6. Step 6: Final answer
    x = 262,916.52

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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.