Finding the Fourth Proportional to 228,728.21, 315,619.29 and 126,728.19
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Solution
The fourth proportional to 228,728.21, 315,619.29 and 126,728.19 is: 174,870.70
Step by Step Solution
- Step 1: Write the proportion equation
228,728.21 : 315,619.29 = 126,728.19 : x - Step 2: Convert to fraction form
228,728.21/315,619.29 = 126,728.19/x - Step 3: Cross multiply
228,728.21x = 315,619.29 × 126,728.19 - Step 4: Simplify right side
228,728.21x = 39,997,861,350.79 - Step 5: Solve for x
x = 39,997,861,350.79/228,728.21 - Step 6: Final answer
x = 174,870.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.