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Finding the Fourth Proportional to 351,804.87, 485,489.50 and 190,663.88

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Solution

The fourth proportional to 351,804.87, 485,489.50 and 190,663.88 is: 263,115.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,804.87 : 485,489.50 = 190,663.88 : x
  2. Step 2: Convert to fraction form
    351,804.87/485,489.50 = 190,663.88/x
  3. Step 3: Cross multiply
    351,804.87x = 485,489.50 × 190,663.88
  4. Step 4: Simplify right side
    351,804.87x = 92,565,308,865.15
  5. Step 5: Solve for x
    x = 92,565,308,865.15/351,804.87
  6. Step 6: Final answer
    x = 263,115.48

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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.