Finding the Fourth Proportional to 396,178.21, 546,721.91 and 214,886.25
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Solution
The fourth proportional to 396,178.21, 546,721.91 and 214,886.25 is: 296,540.84
Step by Step Solution
- Step 1: Write the proportion equation
396,178.21 : 546,721.91 = 214,886.25 : x - Step 2: Convert to fraction form
396,178.21/546,721.91 = 214,886.25/x - Step 3: Cross multiply
396,178.21x = 546,721.91 × 214,886.25 - Step 4: Simplify right side
396,178.21x = 117,483,020,764.13 - Step 5: Solve for x
x = 117,483,020,764.13/396,178.21 - Step 6: Final answer
x = 296,540.84
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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.