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Finding the Fourth Proportional to 320,960.80, 481,311.60 and 110,490.40

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Solution

The fourth proportional to 320,960.80, 481,311.60 and 110,490.40 is: 165,690.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,960.80 : 481,311.60 = 110,490.40 : x
  2. Step 2: Convert to fraction form
    320,960.80/481,311.60 = 110,490.40/x
  3. Step 3: Cross multiply
    320,960.80x = 481,311.60 × 110,490.40
  4. Step 4: Simplify right side
    320,960.80x = 53,180,311,208.64
  5. Step 5: Solve for x
    x = 53,180,311,208.64/320,960.80
  6. Step 6: Final answer
    x = 165,690.99

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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.