Finding the Fourth Proportional to 257,678.79, 386,331.26 and 173,229.44
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Solution
The fourth proportional to 257,678.79, 386,331.26 and 173,229.44 is: 259,718.49
Step by Step Solution
- Step 1: Write the proportion equation
257,678.79 : 386,331.26 = 173,229.44 : x - Step 2: Convert to fraction form
257,678.79/386,331.26 = 173,229.44/x - Step 3: Cross multiply
257,678.79x = 386,331.26 × 173,229.44 - Step 4: Simplify right side
257,678.79x = 66,923,945,026.49 - Step 5: Solve for x
x = 66,923,945,026.49/257,678.79 - Step 6: Final answer
x = 259,718.49
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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.