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Finding the Fourth Proportional to 328,994.81, 493,391.76 and 139,451.63

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Solution

The fourth proportional to 328,994.81, 493,391.76 and 139,451.63 is: 209,134.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,994.81 : 493,391.76 = 139,451.63 : x
  2. Step 2: Convert to fraction form
    328,994.81/493,391.76 = 139,451.63/x
  3. Step 3: Cross multiply
    328,994.81x = 493,391.76 × 139,451.63
  4. Step 4: Simplify right side
    328,994.81x = 68,804,282,170.67
  5. Step 5: Solve for x
    x = 68,804,282,170.67/328,994.81
  6. Step 6: Final answer
    x = 209,134.85

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