Finding the Fourth Proportional to 306,507.91, 422,976.86 and 172,371.91
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Solution
The fourth proportional to 306,507.91, 422,976.86 and 172,371.91 is: 237,870.95
Step by Step Solution
- Step 1: Write the proportion equation
306,507.91 : 422,976.86 = 172,371.91 : x - Step 2: Convert to fraction form
306,507.91/422,976.86 = 172,371.91/x - Step 3: Cross multiply
306,507.91x = 422,976.86 × 172,371.91 - Step 4: Simplify right side
306,507.91x = 72,909,328,382.14 - Step 5: Solve for x
x = 72,909,328,382.14/306,507.91 - Step 6: Final answer
x = 237,870.95
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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.