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Finding the Fourth Proportional to 383,415.99, 529,106.97 and 208,987.68

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Solution

The fourth proportional to 383,415.99, 529,106.97 and 208,987.68 is: 288,399.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,415.99 : 529,106.97 = 208,987.68 : x
  2. Step 2: Convert to fraction form
    383,415.99/529,106.97 = 208,987.68/x
  3. Step 3: Cross multiply
    383,415.99x = 529,106.97 × 208,987.68
  4. Step 4: Simplify right side
    383,415.99x = 110,576,838,132.13
  5. Step 5: Solve for x
    x = 110,576,838,132.13/383,415.99
  6. Step 6: Final answer
    x = 288,399.13

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