Finding the Fourth Proportional to 290,728.68, 401,091.66 and 214,430.92
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Solution
The fourth proportional to 290,728.68, 401,091.66 and 214,430.92 is: 295,830.65
Step by Step Solution
- Step 1: Write the proportion equation
290,728.68 : 401,091.66 = 214,430.92 : x - Step 2: Convert to fraction form
290,728.68/401,091.66 = 214,430.92/x - Step 3: Cross multiply
290,728.68x = 401,091.66 × 214,430.92 - Step 4: Simplify right side
290,728.68x = 86,006,453,658.13 - Step 5: Solve for x
x = 86,006,453,658.13/290,728.68 - Step 6: Final answer
x = 295,830.65
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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.