Finding the Fourth Proportional to 203,511.65, 305,194.57 and 103,638.65
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Solution
The fourth proportional to 203,511.65, 305,194.57 and 103,638.65 is: 155,420.85
Step by Step Solution
- Step 1: Write the proportion equation
203,511.65 : 305,194.57 = 103,638.65 : x - Step 2: Convert to fraction form
203,511.65/305,194.57 = 103,638.65/x - Step 3: Cross multiply
203,511.65x = 305,194.57 × 103,638.65 - Step 4: Simplify right side
203,511.65x = 31,629,953,222.13 - Step 5: Solve for x
x = 31,629,953,222.13/203,511.65 - Step 6: Final answer
x = 155,420.85
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.