Finding the Fourth Proportional to 326,879.36, 489,267.12 and 221,115.68
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Solution
The fourth proportional to 326,879.36, 489,267.12 and 221,115.68 is: 330,961.95
Step by Step Solution
- Step 1: Write the proportion equation
326,879.36 : 489,267.12 = 221,115.68 : x - Step 2: Convert to fraction form
326,879.36/489,267.12 = 221,115.68/x - Step 3: Cross multiply
326,879.36x = 489,267.12 × 221,115.68 - Step 4: Simplify right side
326,879.36x = 108,184,631,940.44 - Step 5: Solve for x
x = 108,184,631,940.44/326,879.36 - Step 6: Final answer
x = 330,961.95
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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.