Finding the Fourth Proportional to 312,927.68, 469,428.16 and 99,620.88
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Solution
The fourth proportional to 312,927.68, 469,428.16 and 99,620.88 is: 149,442.99
Step by Step Solution
- Step 1: Write the proportion equation
312,927.68 : 469,428.16 = 99,620.88 : x - Step 2: Convert to fraction form
312,927.68/469,428.16 = 99,620.88/x - Step 3: Cross multiply
312,927.68x = 469,428.16 × 99,620.88 - Step 4: Simplify right side
312,927.68x = 46,764,846,395.98 - Step 5: Solve for x
x = 46,764,846,395.98/312,927.68 - Step 6: Final answer
x = 149,442.99
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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.