Finding the Fourth Proportional to 338,701.98, 507,891.68 and 128,205.66
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Solution
The fourth proportional to 338,701.98, 507,891.68 and 128,205.66 is: 192,247.44
Step by Step Solution
- Step 1: Write the proportion equation
338,701.98 : 507,891.68 = 128,205.66 : x - Step 2: Convert to fraction form
338,701.98/507,891.68 = 128,205.66/x - Step 3: Cross multiply
338,701.98x = 507,891.68 × 128,205.66 - Step 4: Simplify right side
338,701.98x = 65,114,588,042.91 - Step 5: Solve for x
x = 65,114,588,042.91/338,701.98 - Step 6: Final answer
x = 192,247.44
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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.