Finding the Fourth Proportional to 378,434.08, 522,365.52 and 225,520.26
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Solution
The fourth proportional to 378,434.08, 522,365.52 and 225,520.26 is: 311,293.34
Step by Step Solution
- Step 1: Write the proportion equation
378,434.08 : 522,365.52 = 225,520.26 : x - Step 2: Convert to fraction form
378,434.08/522,365.52 = 225,520.26/x - Step 3: Cross multiply
378,434.08x = 522,365.52 × 225,520.26 - Step 4: Simplify right side
378,434.08x = 117,804,007,885.44 - Step 5: Solve for x
x = 117,804,007,885.44/378,434.08 - Step 6: Final answer
x = 311,293.34
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1.5x scale
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.