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Finding the Fourth Proportional to 264,362.40, 396,543.60 and 139,946.40

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Solution

The fourth proportional to 264,362.40, 396,543.60 and 139,946.40 is: 209,919.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,362.40 : 396,543.60 = 139,946.40 : x
  2. Step 2: Convert to fraction form
    264,362.40/396,543.60 = 139,946.40/x
  3. Step 3: Cross multiply
    264,362.40x = 396,543.60 × 139,946.40
  4. Step 4: Simplify right side
    264,362.40x = 55,494,849,263.04
  5. Step 5: Solve for x
    x = 55,494,849,263.04/264,362.40
  6. Step 6: Final answer
    x = 209,919.60

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