Finding the Fourth Proportional to 382,940.12, 528,528.23 and 221,795.12
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Solution
The fourth proportional to 382,940.12, 528,528.23 and 221,795.12 is: 306,118.31
Step by Step Solution
- Step 1: Write the proportion equation
382,940.12 : 528,528.23 = 221,795.12 : x - Step 2: Convert to fraction form
382,940.12/528,528.23 = 221,795.12/x - Step 3: Cross multiply
382,940.12x = 528,528.23 × 221,795.12 - Step 4: Simplify right side
382,940.12x = 117,224,983,240.31 - Step 5: Solve for x
x = 117,224,983,240.31/382,940.12 - Step 6: Final answer
x = 306,118.31
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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.