Finding the Fourth Proportional to 343,361.80, 515,042.70 and 143,615.80
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Solution
The fourth proportional to 343,361.80, 515,042.70 and 143,615.80 is: 215,423.70
Step by Step Solution
- Step 1: Write the proportion equation
343,361.80 : 515,042.70 = 143,615.80 : x - Step 2: Convert to fraction form
343,361.80/515,042.70 = 143,615.80/x - Step 3: Cross multiply
343,361.80x = 515,042.70 × 143,615.80 - Step 4: Simplify right side
343,361.80x = 73,968,269,394.66 - Step 5: Solve for x
x = 73,968,269,394.66/343,361.80 - Step 6: Final answer
x = 215,423.70
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1.5x scale
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.