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Finding the Fourth Proportional to 383,407.80, 575,111.70 and 217,519.80

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Solution

The fourth proportional to 383,407.80, 575,111.70 and 217,519.80 is: 326,279.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,407.80 : 575,111.70 = 217,519.80 : x
  2. Step 2: Convert to fraction form
    383,407.80/575,111.70 = 217,519.80/x
  3. Step 3: Cross multiply
    383,407.80x = 575,111.70 × 217,519.80
  4. Step 4: Simplify right side
    383,407.80x = 125,098,181,961.66
  5. Step 5: Solve for x
    x = 125,098,181,961.66/383,407.80
  6. Step 6: Final answer
    x = 326,279.70

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