Finding the Fourth Proportional to 356,299.61, 491,507.10 and 220,290.08
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Solution
The fourth proportional to 356,299.61, 491,507.10 and 220,290.08 is: 303,885.09
Step by Step Solution
- Step 1: Write the proportion equation
356,299.61 : 491,507.10 = 220,290.08 : x - Step 2: Convert to fraction form
356,299.61/491,507.10 = 220,290.08/x - Step 3: Cross multiply
356,299.61x = 491,507.10 × 220,290.08 - Step 4: Simplify right side
356,299.61x = 108,274,135,922.03 - Step 5: Solve for x
x = 108,274,135,922.03/356,299.61 - Step 6: Final answer
x = 303,885.09
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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.