Finding the Fourth Proportional to 261,808.54, 392,701.84 and 84,311.62
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Solution
The fourth proportional to 261,808.54, 392,701.84 and 84,311.62 is: 126,463.89
Step by Step Solution
- Step 1: Write the proportion equation
261,808.54 : 392,701.84 = 84,311.62 : x - Step 2: Convert to fraction form
261,808.54/392,701.84 = 84,311.62/x - Step 3: Cross multiply
261,808.54x = 392,701.84 × 84,311.62 - Step 4: Simplify right side
261,808.54x = 33,109,327,114.85 - Step 5: Solve for x
x = 33,109,327,114.85/261,808.54 - Step 6: Final answer
x = 126,463.89
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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.