Finding the Fourth Proportional to 343,742.82, 515,639.07 and 143,862.09
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Solution
The fourth proportional to 343,742.82, 515,639.07 and 143,862.09 is: 215,803.53
Step by Step Solution
- Step 1: Write the proportion equation
343,742.82 : 515,639.07 = 143,862.09 : x - Step 2: Convert to fraction form
343,742.82/515,639.07 = 143,862.09/x - Step 3: Cross multiply
343,742.82x = 515,639.07 × 143,862.09 - Step 4: Simplify right side
343,742.82x = 74,180,914,295.86 - Step 5: Solve for x
x = 74,180,914,295.86/343,742.82 - Step 6: Final answer
x = 215,803.53
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.