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Finding the Fourth Proportional to 512,445.40, 768,668.10 and 228,135.40

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Solution

The fourth proportional to 512,445.40, 768,668.10 and 228,135.40 is: 342,203.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,445.40 : 768,668.10 = 228,135.40 : x
  2. Step 2: Convert to fraction form
    512,445.40/768,668.10 = 228,135.40/x
  3. Step 3: Cross multiply
    512,445.40x = 768,668.10 × 228,135.40
  4. Step 4: Simplify right side
    512,445.40x = 175,360,404,460.74
  5. Step 5: Solve for x
    x = 175,360,404,460.74/512,445.40
  6. Step 6: Final answer
    x = 342,203.10

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