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Finding the Fourth Proportional to 350,940.21, 484,179.71 and 286,297.71

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Solution

The fourth proportional to 350,940.21, 484,179.71 and 286,297.71 is: 394,994.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,940.21 : 484,179.71 = 286,297.71 : x
  2. Step 2: Convert to fraction form
    350,940.21/484,179.71 = 286,297.71/x
  3. Step 3: Cross multiply
    350,940.21x = 484,179.71 × 286,297.71
  4. Step 4: Simplify right side
    350,940.21x = 138,619,540,769.98
  5. Step 5: Solve for x
    x = 138,619,540,769.98/350,940.21
  6. Step 6: Final answer
    x = 394,994.75

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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.