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Finding the Fourth Proportional to 319,600.48, 440,890.68 and 209,153.76

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Solution

The fourth proportional to 319,600.48, 440,890.68 and 209,153.76 is: 288,528.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,600.48 : 440,890.68 = 209,153.76 : x
  2. Step 2: Convert to fraction form
    319,600.48/440,890.68 = 209,153.76/x
  3. Step 3: Cross multiply
    319,600.48x = 440,890.68 × 209,153.76
  4. Step 4: Simplify right side
    319,600.48x = 92,213,943,470.96
  5. Step 5: Solve for x
    x = 92,213,943,470.96/319,600.48
  6. Step 6: Final answer
    x = 288,528.80

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