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Finding the Fourth Proportional to 513,303.20, 769,954.80 and 139,326.20

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Solution

The fourth proportional to 513,303.20, 769,954.80 and 139,326.20 is: 208,989.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,303.20 : 769,954.80 = 139,326.20 : x
  2. Step 2: Convert to fraction form
    513,303.20/769,954.80 = 139,326.20/x
  3. Step 3: Cross multiply
    513,303.20x = 769,954.80 × 139,326.20
  4. Step 4: Simplify right side
    513,303.20x = 107,274,872,605.99
  5. Step 5: Solve for x
    x = 107,274,872,605.99/513,303.20
  6. Step 6: Final answer
    x = 208,989.29

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