Finding the Fourth Proportional to 261,459.23, 392,190.58 and 71,939.62
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Solution
The fourth proportional to 261,459.23, 392,190.58 and 71,939.62 is: 107,909.90
Step by Step Solution
- Step 1: Write the proportion equation
261,459.23 : 392,190.58 = 71,939.62 : x - Step 2: Convert to fraction form
261,459.23/392,190.58 = 71,939.62/x - Step 3: Cross multiply
261,459.23x = 392,190.58 × 71,939.62 - Step 4: Simplify right side
261,459.23x = 28,214,040,132.45 - Step 5: Solve for x
x = 28,214,040,132.45/261,459.23 - Step 6: Final answer
x = 107,909.90
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1.5x scale
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.