Finding the Fourth Proportional to 351,428.72, 484,609.14 and 300,609.68
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Solution
The fourth proportional to 351,428.72, 484,609.14 and 300,609.68 is: 414,531.28
Step by Step Solution
- Step 1: Write the proportion equation
351,428.72 : 484,609.14 = 300,609.68 : x - Step 2: Convert to fraction form
351,428.72/484,609.14 = 300,609.68/x - Step 3: Cross multiply
351,428.72x = 484,609.14 × 300,609.68 - Step 4: Simplify right side
351,428.72x = 145,678,198,500.48 - Step 5: Solve for x
x = 145,678,198,500.48/351,428.72 - Step 6: Final answer
x = 414,531.28
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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.