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Finding the Fourth Proportional to 351,990.73, 485,744.88 and 190,845.28

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Solution

The fourth proportional to 351,990.73, 485,744.88 and 190,845.28 is: 263,365.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,990.73 : 485,744.88 = 190,845.28 : x
  2. Step 2: Convert to fraction form
    351,990.73/485,744.88 = 190,845.28/x
  3. Step 3: Cross multiply
    351,990.73x = 485,744.88 × 190,845.28
  4. Step 4: Simplify right side
    351,990.73x = 92,702,117,632.17
  5. Step 5: Solve for x
    x = 92,702,117,632.17/351,990.73
  6. Step 6: Final answer
    x = 263,365.22

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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.