Finding the Fourth Proportional to 306,028.62, 459,006.40 and 81,405.49
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Solution
The fourth proportional to 306,028.62, 459,006.40 and 81,405.49 is: 122,098.52
Step by Step Solution
- Step 1: Write the proportion equation
306,028.62 : 459,006.40 = 81,405.49 : x - Step 2: Convert to fraction form
306,028.62/459,006.40 = 81,405.49/x - Step 3: Cross multiply
306,028.62x = 459,006.40 × 81,405.49 - Step 4: Simplify right side
306,028.62x = 37,365,640,905.14 - Step 5: Solve for x
x = 37,365,640,905.14/306,028.62 - Step 6: Final answer
x = 122,098.52
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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.