Finding the Fourth Proportional to 305,888.55, 422,129.09 and 168,070.37
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Solution
The fourth proportional to 305,888.55, 422,129.09 and 168,070.37 is: 231,938.70
Step by Step Solution
- Step 1: Write the proportion equation
305,888.55 : 422,129.09 = 168,070.37 : x - Step 2: Convert to fraction form
305,888.55/422,129.09 = 168,070.37/x - Step 3: Cross multiply
305,888.55x = 422,129.09 × 168,070.37 - Step 4: Simplify right side
305,888.55x = 70,947,392,344.06 - Step 5: Solve for x
x = 70,947,392,344.06/305,888.55 - Step 6: Final answer
x = 231,938.70
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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.