Finding the Fourth Proportional to 382,876.68, 528,369.84 and 213,107.16
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Solution
The fourth proportional to 382,876.68, 528,369.84 and 213,107.16 is: 294,087.89
Step by Step Solution
- Step 1: Write the proportion equation
382,876.68 : 528,369.84 = 213,107.16 : x - Step 2: Convert to fraction form
382,876.68/528,369.84 = 213,107.16/x - Step 3: Cross multiply
382,876.68x = 528,369.84 × 213,107.16 - Step 4: Simplify right side
382,876.68x = 112,599,396,032.05 - Step 5: Solve for x
x = 112,599,396,032.05/382,876.68 - Step 6: Final answer
x = 294,087.89
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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.