Finding the Fourth Proportional to 306,879.16, 423,378.62 and 306,406.06
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Solution
The fourth proportional to 306,879.16, 423,378.62 and 306,406.06 is: 422,725.92
Step by Step Solution
- Step 1: Write the proportion equation
306,879.16 : 423,378.62 = 306,406.06 : x - Step 2: Convert to fraction form
306,879.16/423,378.62 = 306,406.06/x - Step 3: Cross multiply
306,879.16x = 423,378.62 × 306,406.06 - Step 4: Simplify right side
306,879.16x = 129,725,774,842.44 - Step 5: Solve for x
x = 129,725,774,842.44/306,879.16 - Step 6: Final answer
x = 422,725.92
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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.