Finding the Fourth Proportional to 341,369.80, 512,054.70 and 128,137.30
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Solution
The fourth proportional to 341,369.80, 512,054.70 and 128,137.30 is: 192,205.95
Step by Step Solution
- Step 1: Write the proportion equation
341,369.80 : 512,054.70 = 128,137.30 : x - Step 2: Convert to fraction form
341,369.80/512,054.70 = 128,137.30/x - Step 3: Cross multiply
341,369.80x = 512,054.70 × 128,137.30 - Step 4: Simplify right side
341,369.80x = 65,613,306,710.31 - Step 5: Solve for x
x = 65,613,306,710.31/341,369.80 - Step 6: Final answer
x = 192,205.95
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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.