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Finding the Fourth Proportional to 351,505.80, 485,072.01 and 190,359.54

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Solution

The fourth proportional to 351,505.80, 485,072.01 and 190,359.54 is: 262,692.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,505.80 : 485,072.01 = 190,359.54 : x
  2. Step 2: Convert to fraction form
    351,505.80/485,072.01 = 190,359.54/x
  3. Step 3: Cross multiply
    351,505.80x = 485,072.01 × 190,359.54
  4. Step 4: Simplify right side
    351,505.80x = 92,338,084,690.48
  5. Step 5: Solve for x
    x = 92,338,084,690.48/351,505.80
  6. Step 6: Final answer
    x = 262,692.92

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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.