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Finding the Fourth Proportional to 303,651.40, 455,477.10 and 280,841.80

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Solution

The fourth proportional to 303,651.40, 455,477.10 and 280,841.80 is: 421,262.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,651.40 : 455,477.10 = 280,841.80 : x
  2. Step 2: Convert to fraction form
    303,651.40/455,477.10 = 280,841.80/x
  3. Step 3: Cross multiply
    303,651.40x = 455,477.10 × 280,841.80
  4. Step 4: Simplify right side
    303,651.40x = 127,917,008,622.78
  5. Step 5: Solve for x
    x = 127,917,008,622.78/303,651.40
  6. Step 6: Final answer
    x = 421,262.70

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