Finding the Fourth Proportional to 218,420.16, 327,512.79 and 128,493.96
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Solution
The fourth proportional to 218,420.16, 327,512.79 and 128,493.96 is: 192,671.85
Step by Step Solution
- Step 1: Write the proportion equation
218,420.16 : 327,512.79 = 128,493.96 : x - Step 2: Convert to fraction form
218,420.16/327,512.79 = 128,493.96/x - Step 3: Cross multiply
218,420.16x = 327,512.79 × 128,493.96 - Step 4: Simplify right side
218,420.16x = 42,083,415,337.75 - Step 5: Solve for x
x = 42,083,415,337.75/218,420.16 - Step 6: Final answer
x = 192,671.85
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.