Finding the Fourth Proportional to 397,257.21, 548,214.48 and 215,968.68
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Solution
The fourth proportional to 397,257.21, 548,214.48 and 215,968.68 is: 298,036.52
Step by Step Solution
- Step 1: Write the proportion equation
397,257.21 : 548,214.48 = 215,968.68 : x - Step 2: Convert to fraction form
397,257.21/548,214.48 = 215,968.68/x - Step 3: Cross multiply
397,257.21x = 548,214.48 × 215,968.68 - Step 4: Simplify right side
397,257.21x = 118,397,157,602.49 - Step 5: Solve for x
x = 118,397,157,602.49/397,257.21 - Step 6: Final answer
x = 298,036.52
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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.