Finding the Fourth Proportional to 320,928.13, 442,879.26 and 173,753.07
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Solution
The fourth proportional to 320,928.13, 442,879.26 and 173,753.07 is: 239,778.39
Step by Step Solution
- Step 1: Write the proportion equation
320,928.13 : 442,879.26 = 173,753.07 : x - Step 2: Convert to fraction form
320,928.13/442,879.26 = 173,753.07/x - Step 3: Cross multiply
320,928.13x = 442,879.26 × 173,753.07 - Step 4: Simplify right side
320,928.13x = 76,951,631,064.33 - Step 5: Solve for x
x = 76,951,631,064.33/320,928.13 - Step 6: Final answer
x = 239,778.39
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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.