Finding the Fourth Proportional to 407,387.10, 611,010.19 and 107,871.99
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Solution
The fourth proportional to 407,387.10, 611,010.19 and 107,871.99 is: 161,789.32
Step by Step Solution
- Step 1: Write the proportion equation
407,387.10 : 611,010.19 = 107,871.99 : x - Step 2: Convert to fraction form
407,387.10/611,010.19 = 107,871.99/x - Step 3: Cross multiply
407,387.10x = 611,010.19 × 107,871.99 - Step 4: Simplify right side
407,387.10x = 65,910,882,342.35 - Step 5: Solve for x
x = 65,910,882,342.35/407,387.10 - Step 6: Final answer
x = 161,789.32
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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.