Finding the Fourth Proportional to 208,405.41, 287,599.73 and 112,912.09
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Solution
The fourth proportional to 208,405.41, 287,599.73 and 112,912.09 is: 155,818.83
Step by Step Solution
- Step 1: Write the proportion equation
208,405.41 : 287,599.73 = 112,912.09 : x - Step 2: Convert to fraction form
208,405.41/287,599.73 = 112,912.09/x - Step 3: Cross multiply
208,405.41x = 287,599.73 × 112,912.09 - Step 4: Simplify right side
208,405.41x = 32,473,487,567.05 - Step 5: Solve for x
x = 32,473,487,567.05/208,405.41 - Step 6: Final answer
x = 155,818.83
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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.