Finding the Fourth Proportional to 382,771.62, 528,190.47 and 221,637.60
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Solution
The fourth proportional to 382,771.62, 528,190.47 and 221,637.60 is: 305,839.99
Step by Step Solution
- Step 1: Write the proportion equation
382,771.62 : 528,190.47 = 221,637.60 : x - Step 2: Convert to fraction form
382,771.62/528,190.47 = 221,637.60/x - Step 3: Cross multiply
382,771.62x = 528,190.47 × 221,637.60 - Step 4: Simplify right side
382,771.62x = 117,066,868,113.67 - Step 5: Solve for x
x = 117,066,868,113.67/382,771.62 - Step 6: Final answer
x = 305,839.99
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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.