Finding the Fourth Proportional to 381,015.22, 571,122.70 and 128,207.94
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Solution
The fourth proportional to 381,015.22, 571,122.70 and 128,207.94 is: 192,177.27
Step by Step Solution
- Step 1: Write the proportion equation
381,015.22 : 571,122.70 = 128,207.94 : x - Step 2: Convert to fraction form
381,015.22/571,122.70 = 128,207.94/x - Step 3: Cross multiply
381,015.22x = 571,122.70 × 128,207.94 - Step 4: Simplify right side
381,015.22x = 73,222,464,854.24 - Step 5: Solve for x
x = 73,222,464,854.24/381,015.22 - Step 6: Final answer
x = 192,177.27
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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.