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Finding the Fourth Proportional to 415,400.80, 623,392.80 and 178,913.20

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Solution

The fourth proportional to 415,400.80, 623,392.80 and 178,913.20 is: 268,495.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,400.80 : 623,392.80 = 178,913.20 : x
  2. Step 2: Convert to fraction form
    415,400.80/623,392.80 = 178,913.20/x
  3. Step 3: Cross multiply
    415,400.80x = 623,392.80 × 178,913.20
  4. Step 4: Simplify right side
    415,400.80x = 111,533,200,704.96
  5. Step 5: Solve for x
    x = 111,533,200,704.96/415,400.80
  6. Step 6: Final answer
    x = 268,495.39

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