Finding the Fourth Proportional to 215,935.40, 323,465.70 and 122,331.80
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Solution
The fourth proportional to 215,935.40, 323,465.70 and 122,331.80 is: 183,249.90
Step by Step Solution
- Step 1: Write the proportion equation
215,935.40 : 323,465.70 = 122,331.80 : x - Step 2: Convert to fraction form
215,935.40/323,465.70 = 122,331.80/x - Step 3: Cross multiply
215,935.40x = 323,465.70 × 122,331.80 - Step 4: Simplify right side
215,935.40x = 39,570,141,319.26 - Step 5: Solve for x
x = 39,570,141,319.26/215,935.40 - Step 6: Final answer
x = 183,249.90
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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.