Finding the Fourth Proportional to 306,124.20, 459,259.20 and 128,539.80
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Solution
The fourth proportional to 306,124.20, 459,259.20 and 128,539.80 is: 192,840.31
Step by Step Solution
- Step 1: Write the proportion equation
306,124.20 : 459,259.20 = 128,539.80 : x - Step 2: Convert to fraction form
306,124.20/459,259.20 = 128,539.80/x - Step 3: Cross multiply
306,124.20x = 459,259.20 × 128,539.80 - Step 4: Simplify right side
306,124.20x = 59,033,085,716.16 - Step 5: Solve for x
x = 59,033,085,716.16/306,124.20 - Step 6: Final answer
x = 192,840.31
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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.