Finding the Fourth Proportional to 393,731.96, 543,345.37 and 223,965.68
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Solution
The fourth proportional to 393,731.96, 543,345.37 and 223,965.68 is: 309,069.94
Step by Step Solution
- Step 1: Write the proportion equation
393,731.96 : 543,345.37 = 223,965.68 : x - Step 2: Convert to fraction form
393,731.96/543,345.37 = 223,965.68/x - Step 3: Cross multiply
393,731.96x = 543,345.37 × 223,965.68 - Step 4: Simplify right side
393,731.96x = 121,690,711,990.26 - Step 5: Solve for x
x = 121,690,711,990.26/393,731.96 - Step 6: Final answer
x = 309,069.94
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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.