Finding the Fourth Proportional to 397,111.68, 548,013.96 and 218,263.68
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Solution
The fourth proportional to 397,111.68, 548,013.96 and 218,263.68 is: 301,203.79
Step by Step Solution
- Step 1: Write the proportion equation
397,111.68 : 548,013.96 = 218,263.68 : x - Step 2: Convert to fraction form
397,111.68/548,013.96 = 218,263.68/x - Step 3: Cross multiply
397,111.68x = 548,013.96 × 218,263.68 - Step 4: Simplify right side
397,111.68x = 119,611,543,600.97 - Step 5: Solve for x
x = 119,611,543,600.97/397,111.68 - Step 6: Final answer
x = 301,203.79
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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.