Finding the Fourth Proportional to 320,968.97, 442,931.76 and 177,725.93
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Solution
The fourth proportional to 320,968.97, 442,931.76 and 177,725.93 is: 245,258.79
Step by Step Solution
- Step 1: Write the proportion equation
320,968.97 : 442,931.76 = 177,725.93 : x - Step 2: Convert to fraction form
320,968.97/442,931.76 = 177,725.93/x - Step 3: Cross multiply
320,968.97x = 442,931.76 × 177,725.93 - Step 4: Simplify right side
320,968.97x = 78,720,460,245.62 - Step 5: Solve for x
x = 78,720,460,245.62/320,968.97 - Step 6: Final answer
x = 245,258.79
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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.