Finding the Fourth Proportional to 306,948.84, 423,491.94 and 172,786.92
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Solution
The fourth proportional to 306,948.84, 423,491.94 and 172,786.92 is: 238,391.09
Step by Step Solution
- Step 1: Write the proportion equation
306,948.84 : 423,491.94 = 172,786.92 : x - Step 2: Convert to fraction form
306,948.84/423,491.94 = 172,786.92/x - Step 3: Cross multiply
306,948.84x = 423,491.94 × 172,786.92 - Step 4: Simplify right side
306,948.84x = 73,173,867,957.42 - Step 5: Solve for x
x = 73,173,867,957.42/306,948.84 - Step 6: Final answer
x = 238,391.09
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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.