Finding the Fourth Proportional to 216,408.08, 298,649.76 and 120,918.80
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Solution
The fourth proportional to 216,408.08, 298,649.76 and 120,918.80 is: 166,871.64
Step by Step Solution
- Step 1: Write the proportion equation
216,408.08 : 298,649.76 = 120,918.80 : x - Step 2: Convert to fraction form
216,408.08/298,649.76 = 120,918.80/x - Step 3: Cross multiply
216,408.08x = 298,649.76 × 120,918.80 - Step 4: Simplify right side
216,408.08x = 36,112,370,599.49 - Step 5: Solve for x
x = 36,112,370,599.49/216,408.08 - Step 6: Final answer
x = 166,871.64
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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.