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Finding the Fourth Proportional to 351,716.64, 485,367.28 and 190,571.66

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Solution

The fourth proportional to 351,716.64, 485,367.28 and 190,571.66 is: 262,987.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,716.64 : 485,367.28 = 190,571.66 : x
  2. Step 2: Convert to fraction form
    351,716.64/485,367.28 = 190,571.66/x
  3. Step 3: Cross multiply
    351,716.64x = 485,367.28 × 190,571.66
  4. Step 4: Simplify right side
    351,716.64x = 92,497,248,259.28
  5. Step 5: Solve for x
    x = 92,497,248,259.28/351,716.64
  6. Step 6: Final answer
    x = 262,987.98

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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.