Finding the Fourth Proportional to 240,609.88, 331,965.30 and 139,988.44
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Solution
The fourth proportional to 240,609.88, 331,965.30 and 139,988.44 is: 193,139.64
Step by Step Solution
- Step 1: Write the proportion equation
240,609.88 : 331,965.30 = 139,988.44 : x - Step 2: Convert to fraction form
240,609.88/331,965.30 = 139,988.44/x - Step 3: Cross multiply
240,609.88x = 331,965.30 × 139,988.44 - Step 4: Simplify right side
240,609.88x = 46,471,304,481.13 - Step 5: Solve for x
x = 46,471,304,481.13/240,609.88 - Step 6: Final answer
x = 193,139.64
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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.