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Finding the Fourth Proportional to 348,029.20, 521,266.20 and 285,821.20

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Solution

The fourth proportional to 348,029.20, 521,266.20 and 285,821.20 is: 428,093.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,029.20 : 521,266.20 = 285,821.20 : x
  2. Step 2: Convert to fraction form
    348,029.20/521,266.20 = 285,821.20/x
  3. Step 3: Cross multiply
    348,029.20x = 521,266.20 × 285,821.20
  4. Step 4: Simplify right side
    348,029.20x = 148,988,930,803.44
  5. Step 5: Solve for x
    x = 148,988,930,803.44/348,029.20
  6. Step 6: Final answer
    x = 428,093.19

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