Finding the Fourth Proportional to 343,853.80, 515,780.70 and 107,194.60
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Solution
The fourth proportional to 343,853.80, 515,780.70 and 107,194.60 is: 160,791.90
Step by Step Solution
- Step 1: Write the proportion equation
343,853.80 : 515,780.70 = 107,194.60 : x - Step 2: Convert to fraction form
343,853.80/515,780.70 = 107,194.60/x - Step 3: Cross multiply
343,853.80x = 515,780.70 × 107,194.60 - Step 4: Simplify right side
343,853.80x = 55,288,905,824.22 - Step 5: Solve for x
x = 55,288,905,824.22/343,853.80 - Step 6: Final answer
x = 160,791.90
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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.