Finding the Fourth Proportional to 382,961.38, 528,406.68 and 221,806.84
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Solution
The fourth proportional to 382,961.38, 528,406.68 and 221,806.84 is: 306,047.09
Step by Step Solution
- Step 1: Write the proportion equation
382,961.38 : 528,406.68 = 221,806.84 : x - Step 2: Convert to fraction form
382,961.38/528,406.68 = 221,806.84/x - Step 3: Cross multiply
382,961.38x = 528,406.68 × 221,806.84 - Step 4: Simplify right side
382,961.38x = 117,204,215,925.69 - Step 5: Solve for x
x = 117,204,215,925.69/382,961.38 - Step 6: Final answer
x = 306,047.09
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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.