Finding the Fourth Proportional to 382,971.24, 528,420.16 and 221,816.64
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Solution
The fourth proportional to 382,971.24, 528,420.16 and 221,816.64 is: 306,060.54
Step by Step Solution
- Step 1: Write the proportion equation
382,971.24 : 528,420.16 = 221,816.64 : x - Step 2: Convert to fraction form
382,971.24/528,420.16 = 221,816.64/x - Step 3: Cross multiply
382,971.24x = 528,420.16 × 221,816.64 - Step 4: Simplify right side
382,971.24x = 117,212,384,399.46 - Step 5: Solve for x
x = 117,212,384,399.46/382,971.24 - Step 6: Final answer
x = 306,060.54
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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.