Finding the Fourth Proportional to 311,810.74, 430,302.75 and 189,267.70
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Solution
The fourth proportional to 311,810.74, 430,302.75 and 189,267.70 is: 261,191.81
Step by Step Solution
- Step 1: Write the proportion equation
311,810.74 : 430,302.75 = 189,267.70 : x - Step 2: Convert to fraction form
311,810.74/430,302.75 = 189,267.70/x - Step 3: Cross multiply
311,810.74x = 430,302.75 × 189,267.70 - Step 4: Simplify right side
311,810.74x = 81,442,411,796.18 - Step 5: Solve for x
x = 81,442,411,796.18/311,810.74 - Step 6: Final answer
x = 261,191.81
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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.