Finding the Fourth Proportional to 306,340.18, 422,745.69 and 172,204.18
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Solution
The fourth proportional to 306,340.18, 422,745.69 and 172,204.18 is: 237,639.66
Step by Step Solution
- Step 1: Write the proportion equation
306,340.18 : 422,745.69 = 172,204.18 : x - Step 2: Convert to fraction form
306,340.18/422,745.69 = 172,204.18/x - Step 3: Cross multiply
306,340.18x = 422,745.69 × 172,204.18 - Step 4: Simplify right side
306,340.18x = 72,798,574,894.98 - Step 5: Solve for x
x = 72,798,574,894.98/306,340.18 - Step 6: Final answer
x = 237,639.66
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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.