Finding the Fourth Proportional to 396,396.45, 546,899.85 and 221,940.99
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Solution
The fourth proportional to 396,396.45, 546,899.85 and 221,940.99 is: 306,207.32
Step by Step Solution
- Step 1: Write the proportion equation
396,396.45 : 546,899.85 = 221,940.99 : x - Step 2: Convert to fraction form
396,396.45/546,899.85 = 221,940.99/x - Step 3: Cross multiply
396,396.45x = 546,899.85 × 221,940.99 - Step 4: Simplify right side
396,396.45x = 121,379,494,139.85 - Step 5: Solve for x
x = 121,379,494,139.85/396,396.45 - Step 6: Final answer
x = 306,207.32
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.