Finding the Fourth Proportional to 203,427.30, 305,140.95 and 128,777.70
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Solution
The fourth proportional to 203,427.30, 305,140.95 and 128,777.70 is: 193,166.55
Step by Step Solution
- Step 1: Write the proportion equation
203,427.30 : 305,140.95 = 128,777.70 : x - Step 2: Convert to fraction form
203,427.30/305,140.95 = 128,777.70/x - Step 3: Cross multiply
203,427.30x = 305,140.95 × 128,777.70 - Step 4: Simplify right side
203,427.30x = 39,295,349,716.82 - Step 5: Solve for x
x = 39,295,349,716.82/203,427.30 - Step 6: Final answer
x = 193,166.55
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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.