Finding the Fourth Proportional to 421,174.70, 581,221.11 and 230,188.09
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Solution
The fourth proportional to 421,174.70, 581,221.11 and 230,188.09 is: 317,659.58
Step by Step Solution
- Step 1: Write the proportion equation
421,174.70 : 581,221.11 = 230,188.09 : x - Step 2: Convert to fraction form
421,174.70/581,221.11 = 230,188.09/x - Step 3: Cross multiply
421,174.70x = 581,221.11 × 230,188.09 - Step 4: Simplify right side
421,174.70x = 133,790,176,877.35 - Step 5: Solve for x
x = 133,790,176,877.35/421,174.70 - Step 6: Final answer
x = 317,659.58
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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.