Finding the Fourth Proportional to 381,362.99, 571,645.35 and 128,556.11
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Solution
The fourth proportional to 381,362.99, 571,645.35 and 128,556.11 is: 192,699.62
Step by Step Solution
- Step 1: Write the proportion equation
381,362.99 : 571,645.35 = 128,556.11 : x - Step 2: Convert to fraction form
381,362.99/571,645.35 = 128,556.11/x - Step 3: Cross multiply
381,362.99x = 571,645.35 × 128,556.11 - Step 4: Simplify right side
381,362.99x = 73,488,503,924.70 - Step 5: Solve for x
x = 73,488,503,924.70/381,362.99 - Step 6: Final answer
x = 192,699.62
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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.