Finding the Fourth Proportional to 280,186.36, 386,668.02 and 159,338.68
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Solution
The fourth proportional to 280,186.36, 386,668.02 and 159,338.68 is: 219,893.54
Step by Step Solution
- Step 1: Write the proportion equation
280,186.36 : 386,668.02 = 159,338.68 : x - Step 2: Convert to fraction form
280,186.36/386,668.02 = 159,338.68/x - Step 3: Cross multiply
280,186.36x = 386,668.02 × 159,338.68 - Step 4: Simplify right side
280,186.36x = 61,611,171,905.01 - Step 5: Solve for x
x = 61,611,171,905.01/280,186.36 - Step 6: Final answer
x = 219,893.54
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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.