Finding the Fourth Proportional to 343,891.80, 515,837.70 and 320,563.80
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Solution
The fourth proportional to 343,891.80, 515,837.70 and 320,563.80 is: 480,845.70
Step by Step Solution
- Step 1: Write the proportion equation
343,891.80 : 515,837.70 = 320,563.80 : x - Step 2: Convert to fraction form
343,891.80/515,837.70 = 320,563.80/x - Step 3: Cross multiply
343,891.80x = 515,837.70 × 320,563.80 - Step 4: Simplify right side
343,891.80x = 165,358,893,295.26 - Step 5: Solve for x
x = 165,358,893,295.26/343,891.80 - Step 6: Final answer
x = 480,845.70
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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.