Finding the Fourth Proportional to 381,004.95, 571,107.34 and 128,197.68
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Solution
The fourth proportional to 381,004.95, 571,107.34 and 128,197.68 is: 192,161.90
Step by Step Solution
- Step 1: Write the proportion equation
381,004.95 : 571,107.34 = 128,197.68 : x - Step 2: Convert to fraction form
381,004.95/571,107.34 = 128,197.68/x - Step 3: Cross multiply
381,004.95x = 571,107.34 × 128,197.68 - Step 4: Simplify right side
381,004.95x = 73,214,634,037.57 - Step 5: Solve for x
x = 73,214,634,037.57/381,004.95 - Step 6: Final answer
x = 192,161.90
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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.