Finding the Fourth Proportional to 393,632.54, 543,264.99 and 221,583.82
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Solution
The fourth proportional to 393,632.54, 543,264.99 and 221,583.82 is: 305,814.99
Step by Step Solution
- Step 1: Write the proportion equation
393,632.54 : 543,264.99 = 221,583.82 : x - Step 2: Convert to fraction form
393,632.54/543,264.99 = 221,583.82/x - Step 3: Cross multiply
393,632.54x = 543,264.99 × 221,583.82 - Step 4: Simplify right side
393,632.54x = 120,378,730,398.30 - Step 5: Solve for x
x = 120,378,730,398.30/393,632.54 - Step 6: Final answer
x = 305,814.99
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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.