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Finding the Fourth Proportional to 331,401.20, 496,810.20 and 198,334.40

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Solution

The fourth proportional to 331,401.20, 496,810.20 and 198,334.40 is: 297,327.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,401.20 : 496,810.20 = 198,334.40 : x
  2. Step 2: Convert to fraction form
    331,401.20/496,810.20 = 198,334.40/x
  3. Step 3: Cross multiply
    331,401.20x = 496,810.20 × 198,334.40
  4. Step 4: Simplify right side
    331,401.20x = 98,534,552,930.88
  5. Step 5: Solve for x
    x = 98,534,552,930.88/331,401.20
  6. Step 6: Final answer
    x = 297,327.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.