Finding the Fourth Proportional to 202,961.20, 304,528.20 and 128,138.80
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Solution
The fourth proportional to 202,961.20, 304,528.20 and 128,138.80 is: 192,262.75
Step by Step Solution
- Step 1: Write the proportion equation
202,961.20 : 304,528.20 = 128,138.80 : x - Step 2: Convert to fraction form
202,961.20/304,528.20 = 128,138.80/x - Step 3: Cross multiply
202,961.20x = 304,528.20 × 128,138.80 - Step 4: Simplify right side
202,961.20x = 39,021,878,114.16 - Step 5: Solve for x
x = 39,021,878,114.16/202,961.20 - Step 6: Final answer
x = 192,262.75
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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.