Finding the Fourth Proportional to 393,576.58, 543,163.15 and 221,511.02
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Solution
The fourth proportional to 393,576.58, 543,163.15 and 221,511.02 is: 305,700.67
Step by Step Solution
- Step 1: Write the proportion equation
393,576.58 : 543,163.15 = 221,511.02 : x - Step 2: Convert to fraction form
393,576.58/543,163.15 = 221,511.02/x - Step 3: Cross multiply
393,576.58x = 543,163.15 × 221,511.02 - Step 4: Simplify right side
393,576.58x = 120,316,623,818.46 - Step 5: Solve for x
x = 120,316,623,818.46/393,576.58 - Step 6: Final answer
x = 305,700.67
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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.