Finding the Fourth Proportional to 397,274.75, 548,239.16 and 218,426.75
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Solution
The fourth proportional to 397,274.75, 548,239.16 and 218,426.75 is: 301,428.92
Step by Step Solution
- Step 1: Write the proportion equation
397,274.75 : 548,239.16 = 218,426.75 : x - Step 2: Convert to fraction form
397,274.75/548,239.16 = 218,426.75/x - Step 3: Cross multiply
397,274.75x = 548,239.16 × 218,426.75 - Step 4: Simplify right side
397,274.75x = 119,750,097,941.53 - Step 5: Solve for x
x = 119,750,097,941.53/397,274.75 - Step 6: Final answer
x = 301,428.92
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1.5x scale
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.