Finding the Fourth Proportional to 306,120.39, 422,421.84 and 170,143.67
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Solution
The fourth proportional to 306,120.39, 422,421.84 and 170,143.67 is: 234,784.75
Step by Step Solution
- Step 1: Write the proportion equation
306,120.39 : 422,421.84 = 170,143.67 : x - Step 2: Convert to fraction form
306,120.39/422,421.84 = 170,143.67/x - Step 3: Cross multiply
306,120.39x = 422,421.84 × 170,143.67 - Step 4: Simplify right side
306,120.39x = 71,872,400,033.64 - Step 5: Solve for x
x = 71,872,400,033.64/306,120.39 - Step 6: Final answer
x = 234,784.75
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1.5x scale
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.