Finding the Fourth Proportional to 306,387.10, 422,808.06 and 170,418.12
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Solution
The fourth proportional to 306,387.10, 422,808.06 and 170,418.12 is: 235,173.59
Step by Step Solution
- Step 1: Write the proportion equation
306,387.10 : 422,808.06 = 170,418.12 : x - Step 2: Convert to fraction form
306,387.10/422,808.06 = 170,418.12/x - Step 3: Cross multiply
306,387.10x = 422,808.06 × 170,418.12 - Step 4: Simplify right side
306,387.10x = 72,054,154,706.05 - Step 5: Solve for x
x = 72,054,154,706.05/306,387.10 - Step 6: Final answer
x = 235,173.59
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.