Finding the Fourth Proportional to 282,409.70, 389,728.11 and 155,088.02
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Solution
The fourth proportional to 282,409.70, 389,728.11 and 155,088.02 is: 214,022.96
Step by Step Solution
- Step 1: Write the proportion equation
282,409.70 : 389,728.11 = 155,088.02 : x - Step 2: Convert to fraction form
282,409.70/389,728.11 = 155,088.02/x - Step 3: Cross multiply
282,409.70x = 389,728.11 × 155,088.02 - Step 4: Simplify right side
282,409.70x = 60,442,158,969.60 - Step 5: Solve for x
x = 60,442,158,969.60/282,409.70 - Step 6: Final answer
x = 214,022.96
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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.