Finding the Fourth Proportional to 638,855.14, 958,075.42 and 212,276.42
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Solution
The fourth proportional to 638,855.14, 958,075.42 and 212,276.42 is: 318,345.75
Step by Step Solution
- Step 1: Write the proportion equation
638,855.14 : 958,075.42 = 212,276.42 : x - Step 2: Convert to fraction form
638,855.14/958,075.42 = 212,276.42/x - Step 3: Cross multiply
638,855.14x = 958,075.42 × 212,276.42 - Step 4: Simplify right side
638,855.14x = 203,376,820,247.60 - Step 5: Solve for x
x = 203,376,820,247.60/638,855.14 - Step 6: Final answer
x = 318,345.75
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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.