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Finding the Fourth Proportional to 263,887.80, 395,831.70 and 64,206.60

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Solution

The fourth proportional to 263,887.80, 395,831.70 and 64,206.60 is: 96,309.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,887.80 : 395,831.70 = 64,206.60 : x
  2. Step 2: Convert to fraction form
    263,887.80/395,831.70 = 64,206.60/x
  3. Step 3: Cross multiply
    263,887.80x = 395,831.70 × 64,206.60
  4. Step 4: Simplify right side
    263,887.80x = 25,415,007,629.22
  5. Step 5: Solve for x
    x = 25,415,007,629.22/263,887.80
  6. Step 6: Final answer
    x = 96,309.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.