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Finding the Fourth Proportional to 422,245.60, 633,409.98 and 122,728.80

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Solution

The fourth proportional to 422,245.60, 633,409.98 and 122,728.80 is: 184,105.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,245.60 : 633,409.98 = 122,728.80 : x
  2. Step 2: Convert to fraction form
    422,245.60/633,409.98 = 122,728.80/x
  3. Step 3: Cross multiply
    422,245.60x = 633,409.98 × 122,728.80
  4. Step 4: Simplify right side
    422,245.60x = 77,737,646,753.42
  5. Step 5: Solve for x
    x = 77,737,646,753.42/422,245.60
  6. Step 6: Final answer
    x = 184,105.29

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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.