Finding the Fourth Proportional to 249,021.81, 343,649.39 and 135,843.75
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Solution
The fourth proportional to 249,021.81, 343,649.39 and 135,843.75 is: 187,463.99
Step by Step Solution
- Step 1: Write the proportion equation
249,021.81 : 343,649.39 = 135,843.75 : x - Step 2: Convert to fraction form
249,021.81/343,649.39 = 135,843.75/x - Step 3: Cross multiply
249,021.81x = 343,649.39 × 135,843.75 - Step 4: Simplify right side
249,021.81x = 46,682,621,143.59 - Step 5: Solve for x
x = 46,682,621,143.59/249,021.81 - Step 6: Final answer
x = 187,463.99
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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.