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Finding the Fourth Proportional to 456,212.60, 684,707.70 and 203,881.40

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Solution

The fourth proportional to 456,212.60, 684,707.70 and 203,881.40 is: 305,995.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,212.60 : 684,707.70 = 203,881.40 : x
  2. Step 2: Convert to fraction form
    456,212.60/684,707.70 = 203,881.40/x
  3. Step 3: Cross multiply
    456,212.60x = 684,707.70 × 203,881.40
  4. Step 4: Simplify right side
    456,212.60x = 139,599,164,466.78
  5. Step 5: Solve for x
    x = 139,599,164,466.78/456,212.60
  6. Step 6: Final answer
    x = 305,995.85

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