Finding the Fourth Proportional to 393,709.05, 543,318.35 and 214,861.05
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Solution
The fourth proportional to 393,709.05, 543,318.35 and 214,861.05 is: 296,508.17
Step by Step Solution
- Step 1: Write the proportion equation
393,709.05 : 543,318.35 = 214,861.05 : x - Step 2: Convert to fraction form
393,709.05/543,318.35 = 214,861.05/x - Step 3: Cross multiply
393,709.05x = 543,318.35 × 214,861.05 - Step 4: Simplify right side
393,709.05x = 116,737,950,090.96 - Step 5: Solve for x
x = 116,737,950,090.96/393,709.05 - Step 6: Final answer
x = 296,508.17
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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.