Finding the Fourth Proportional to 306,213.78, 459,330.12 and 253,318.62
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Solution
The fourth proportional to 306,213.78, 459,330.12 and 253,318.62 is: 379,985.75
Step by Step Solution
- Step 1: Write the proportion equation
306,213.78 : 459,330.12 = 253,318.62 : x - Step 2: Convert to fraction form
306,213.78/459,330.12 = 253,318.62/x - Step 3: Cross multiply
306,213.78x = 459,330.12 × 253,318.62 - Step 4: Simplify right side
306,213.78x = 116,356,872,122.83 - Step 5: Solve for x
x = 116,356,872,122.83/306,213.78 - Step 6: Final answer
x = 379,985.75
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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.