Finding the Fourth Proportional to 320,981.23, 442,948.64 and 177,738.19
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Solution
The fourth proportional to 320,981.23, 442,948.64 and 177,738.19 is: 245,275.68
Step by Step Solution
- Step 1: Write the proportion equation
320,981.23 : 442,948.64 = 177,738.19 : x - Step 2: Convert to fraction form
320,981.23/442,948.64 = 177,738.19/x - Step 3: Cross multiply
320,981.23x = 442,948.64 × 177,738.19 - Step 4: Simplify right side
320,981.23x = 78,728,888,647.87 - Step 5: Solve for x
x = 78,728,888,647.87/320,981.23 - Step 6: Final answer
x = 245,275.68
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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.