Finding the Fourth Proportional to 270,772.54, 405,917.70 and 128,530.06
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Solution
The fourth proportional to 270,772.54, 405,917.70 and 128,530.06 is: 192,680.64
Step by Step Solution
- Step 1: Write the proportion equation
270,772.54 : 405,917.70 = 128,530.06 : x - Step 2: Convert to fraction form
270,772.54/405,917.70 = 128,530.06/x - Step 3: Cross multiply
270,772.54x = 405,917.70 × 128,530.06 - Step 4: Simplify right side
270,772.54x = 52,172,626,336.06 - Step 5: Solve for x
x = 52,172,626,336.06/270,772.54 - Step 6: Final answer
x = 192,680.64
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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.