Finding the Fourth Proportional to 263,728.13, 395,657.80 and 76,739.63
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Solution
The fourth proportional to 263,728.13, 395,657.80 and 76,739.63 is: 115,128.53
Step by Step Solution
- Step 1: Write the proportion equation
263,728.13 : 395,657.80 = 76,739.63 : x - Step 2: Convert to fraction form
263,728.13/395,657.80 = 76,739.63/x - Step 3: Cross multiply
263,728.13x = 395,657.80 × 76,739.63 - Step 4: Simplify right side
263,728.13x = 30,362,631,008.48 - Step 5: Solve for x
x = 30,362,631,008.48/263,728.13 - Step 6: Final answer
x = 115,128.53
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1.5x scale
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.