Finding the Fourth Proportional to 392,506.55, 541,656.99 and 220,431.77
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Solution
The fourth proportional to 392,506.55, 541,656.99 and 220,431.77 is: 304,194.69
Step by Step Solution
- Step 1: Write the proportion equation
392,506.55 : 541,656.99 = 220,431.77 : x - Step 2: Convert to fraction form
392,506.55/541,656.99 = 220,431.77/x - Step 3: Cross multiply
392,506.55x = 541,656.99 × 220,431.77 - Step 4: Simplify right side
392,506.55x = 119,398,409,778.60 - Step 5: Solve for x
x = 119,398,409,778.60/392,506.55 - Step 6: Final answer
x = 304,194.69
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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.