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Finding the Fourth Proportional to 280,671.21, 387,321.75 and 153,344.07

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Solution

The fourth proportional to 280,671.21, 387,321.75 and 153,344.07 is: 211,612.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,671.21 : 387,321.75 = 153,344.07 : x
  2. Step 2: Convert to fraction form
    280,671.21/387,321.75 = 153,344.07/x
  3. Step 3: Cross multiply
    280,671.21x = 387,321.75 × 153,344.07
  4. Step 4: Simplify right side
    280,671.21x = 59,393,493,544.52
  5. Step 5: Solve for x
    x = 59,393,493,544.52/280,671.21
  6. Step 6: Final answer
    x = 211,612.35

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