Finding the Fourth Proportional to 225,639.36, 311,305.95 and 130,143.60
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Solution
The fourth proportional to 225,639.36, 311,305.95 and 130,143.60 is: 179,554.12
Step by Step Solution
- Step 1: Write the proportion equation
225,639.36 : 311,305.95 = 130,143.60 : x - Step 2: Convert to fraction form
225,639.36/311,305.95 = 130,143.60/x - Step 3: Cross multiply
225,639.36x = 311,305.95 × 130,143.60 - Step 4: Simplify right side
225,639.36x = 40,514,477,034.42 - Step 5: Solve for x
x = 40,514,477,034.42/225,639.36 - Step 6: Final answer
x = 179,554.12
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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.