Finding the Fourth Proportional to 405,576.11, 608,437.40 and 135,678.67
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Solution
The fourth proportional to 405,576.11, 608,437.40 and 135,678.67 is: 203,542.50
Step by Step Solution
- Step 1: Write the proportion equation
405,576.11 : 608,437.40 = 135,678.67 : x - Step 2: Convert to fraction form
405,576.11/608,437.40 = 135,678.67/x - Step 3: Cross multiply
405,576.11x = 608,437.40 × 135,678.67 - Step 4: Simplify right side
405,576.11x = 82,551,975,141.94 - Step 5: Solve for x
x = 82,551,975,141.94/405,576.11 - Step 6: Final answer
x = 203,542.50
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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.