Finding the Fourth Proportional to 397,408.76, 548,434.38 and 216,131.96
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Solution
The fourth proportional to 397,408.76, 548,434.38 and 216,131.96 is: 298,267.70
Step by Step Solution
- Step 1: Write the proportion equation
397,408.76 : 548,434.38 = 216,131.96 : x - Step 2: Convert to fraction form
397,408.76/548,434.38 = 216,131.96/x - Step 3: Cross multiply
397,408.76x = 548,434.38 × 216,131.96 - Step 4: Simplify right side
397,408.76x = 118,534,197,480.79 - Step 5: Solve for x
x = 118,534,197,480.79/397,408.76 - Step 6: Final answer
x = 298,267.70
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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.