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Finding the Fourth Proportional to 303,721.20, 455,581.80 and 215,074.80

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Solution

The fourth proportional to 303,721.20, 455,581.80 and 215,074.80 is: 322,612.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,721.20 : 455,581.80 = 215,074.80 : x
  2. Step 2: Convert to fraction form
    303,721.20/455,581.80 = 215,074.80/x
  3. Step 3: Cross multiply
    303,721.20x = 455,581.80 × 215,074.80
  4. Step 4: Simplify right side
    303,721.20x = 97,984,164,518.64
  5. Step 5: Solve for x
    x = 97,984,164,518.64/303,721.20
  6. Step 6: Final answer
    x = 322,612.20

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