Finding the Fourth Proportional to 249,138.63, 343,811.21 and 135,961.38
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Solution
The fourth proportional to 249,138.63, 343,811.21 and 135,961.38 is: 187,626.65
Step by Step Solution
- Step 1: Write the proportion equation
249,138.63 : 343,811.21 = 135,961.38 : x - Step 2: Convert to fraction form
249,138.63/343,811.21 = 135,961.38/x - Step 3: Cross multiply
249,138.63x = 343,811.21 × 135,961.38 - Step 4: Simplify right side
249,138.63x = 46,745,045,451.73 - Step 5: Solve for x
x = 46,745,045,451.73/249,138.63 - Step 6: Final answer
x = 187,626.65
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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.