Finding the Fourth Proportional to 306,218.68, 459,225.82 and 128,692.60
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Solution
The fourth proportional to 306,218.68, 459,225.82 and 128,692.60 is: 192,995.95
Step by Step Solution
- Step 1: Write the proportion equation
306,218.68 : 459,225.82 = 128,692.60 : x - Step 2: Convert to fraction form
306,218.68/459,225.82 = 128,692.60/x - Step 3: Cross multiply
306,218.68x = 459,225.82 × 128,692.60 - Step 4: Simplify right side
306,218.68x = 59,098,964,762.93 - Step 5: Solve for x
x = 59,098,964,762.93/306,218.68 - Step 6: Final answer
x = 192,995.95
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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.