Finding the Fourth Proportional to 320,981.13, 442,948.50 and 177,738.09
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Solution
The fourth proportional to 320,981.13, 442,948.50 and 177,738.09 is: 245,275.54
Step by Step Solution
- Step 1: Write the proportion equation
320,981.13 : 442,948.50 = 177,738.09 : x - Step 2: Convert to fraction form
320,981.13/442,948.50 = 177,738.09/x - Step 3: Cross multiply
320,981.13x = 442,948.50 × 177,738.09 - Step 4: Simplify right side
320,981.13x = 78,728,820,358.37 - Step 5: Solve for x
x = 78,728,820,358.37/320,981.13 - Step 6: Final answer
x = 245,275.54
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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.