Finding the Fourth Proportional to 381,136.24, 571,790.62 and 128,409.87
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Solution
The fourth proportional to 381,136.24, 571,790.62 and 128,409.87 is: 192,643.86
Step by Step Solution
- Step 1: Write the proportion equation
381,136.24 : 571,790.62 = 128,409.87 : x - Step 2: Convert to fraction form
381,136.24/571,790.62 = 128,409.87/x - Step 3: Cross multiply
381,136.24x = 571,790.62 × 128,409.87 - Step 4: Simplify right side
381,136.24x = 73,423,556,001.44 - Step 5: Solve for x
x = 73,423,556,001.44/381,136.24 - Step 6: Final answer
x = 192,643.86
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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.