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Finding the Fourth Proportional to 408,845.80, 613,268.70 and 320,175.10

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Solution

The fourth proportional to 408,845.80, 613,268.70 and 320,175.10 is: 480,262.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,845.80 : 613,268.70 = 320,175.10 : x
  2. Step 2: Convert to fraction form
    408,845.80/613,268.70 = 320,175.10/x
  3. Step 3: Cross multiply
    408,845.80x = 613,268.70 × 320,175.10
  4. Step 4: Simplify right side
    408,845.80x = 196,353,367,349.37
  5. Step 5: Solve for x
    x = 196,353,367,349.37/408,845.80
  6. Step 6: Final answer
    x = 480,262.65

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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.