Finding the Fourth Proportional to 341,421.23, 512,187.47 and 128,205.65
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Solution
The fourth proportional to 341,421.23, 512,187.47 and 128,205.65 is: 192,329.36
Step by Step Solution
- Step 1: Write the proportion equation
341,421.23 : 512,187.47 = 128,205.65 : x - Step 2: Convert to fraction form
341,421.23/512,187.47 = 128,205.65/x - Step 3: Cross multiply
341,421.23x = 512,187.47 × 128,205.65 - Step 4: Simplify right side
341,421.23x = 65,665,324,311.24 - Step 5: Solve for x
x = 65,665,324,311.24/341,421.23 - Step 6: Final answer
x = 192,329.36
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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.