Finding the Fourth Proportional to 318,203.18, 477,436.94 and 128,797.44
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Solution
The fourth proportional to 318,203.18, 477,436.94 and 128,797.44 is: 193,249.66
Step by Step Solution
- Step 1: Write the proportion equation
318,203.18 : 477,436.94 = 128,797.44 : x - Step 2: Convert to fraction form
318,203.18/477,436.94 = 128,797.44/x - Step 3: Cross multiply
318,203.18x = 477,436.94 × 128,797.44 - Step 4: Simplify right side
318,203.18x = 61,492,655,633.43 - Step 5: Solve for x
x = 61,492,655,633.43/318,203.18 - Step 6: Final answer
x = 193,249.66
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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.