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Finding the Fourth Proportional to 380,903.78, 525,635.83 and 208,815.86

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Solution

The fourth proportional to 380,903.78, 525,635.83 and 208,815.86 is: 288,159.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,903.78 : 525,635.83 = 208,815.86 : x
  2. Step 2: Convert to fraction form
    380,903.78/525,635.83 = 208,815.86/x
  3. Step 3: Cross multiply
    380,903.78x = 525,635.83 × 208,815.86
  4. Step 4: Simplify right side
    380,903.78x = 109,761,096,506.67
  5. Step 5: Solve for x
    x = 109,761,096,506.67/380,903.78
  6. Step 6: Final answer
    x = 288,159.64

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