Finding the Fourth Proportional to 320,879.24, 442,799.40 and 177,630.74
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Solution
The fourth proportional to 320,879.24, 442,799.40 and 177,630.74 is: 245,122.70
Step by Step Solution
- Step 1: Write the proportion equation
320,879.24 : 442,799.40 = 177,630.74 : x - Step 2: Convert to fraction form
320,879.24/442,799.40 = 177,630.74/x - Step 3: Cross multiply
320,879.24x = 442,799.40 × 177,630.74 - Step 4: Simplify right side
320,879.24x = 78,654,785,093.56 - Step 5: Solve for x
x = 78,654,785,093.56/320,879.24 - Step 6: Final answer
x = 245,122.70
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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.