Finding the Fourth Proportional to 425,571.98, 638,451.36 and 126,075.99
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Solution
The fourth proportional to 425,571.98, 638,451.36 and 126,075.99 is: 189,141.65
Step by Step Solution
- Step 1: Write the proportion equation
425,571.98 : 638,451.36 = 126,075.99 : x - Step 2: Convert to fraction form
425,571.98/638,451.36 = 126,075.99/x - Step 3: Cross multiply
425,571.98x = 638,451.36 × 126,075.99 - Step 4: Simplify right side
425,571.98x = 80,493,387,278.85 - Step 5: Solve for x
x = 80,493,387,278.85/425,571.98 - Step 6: Final answer
x = 189,141.65
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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.