Finding the Fourth Proportional to 371,057.64, 512,059.68 and 209,909.28
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Solution
The fourth proportional to 371,057.64, 512,059.68 and 209,909.28 is: 289,674.88
Step by Step Solution
- Step 1: Write the proportion equation
371,057.64 : 512,059.68 = 209,909.28 : x - Step 2: Convert to fraction form
371,057.64/512,059.68 = 209,909.28/x - Step 3: Cross multiply
371,057.64x = 512,059.68 × 209,909.28 - Step 4: Simplify right side
371,057.64x = 107,486,078,745.83 - Step 5: Solve for x
x = 107,486,078,745.83/371,057.64 - Step 6: Final answer
x = 289,674.88
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.