Finding the Fourth Proportional to 396,178.09, 546,721.74 and 214,886.13
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Solution
The fourth proportional to 396,178.09, 546,721.74 and 214,886.13 is: 296,540.68
Step by Step Solution
- Step 1: Write the proportion equation
396,178.09 : 546,721.74 = 214,886.13 : x - Step 2: Convert to fraction form
396,178.09/546,721.74 = 214,886.13/x - Step 3: Cross multiply
396,178.09x = 546,721.74 × 214,886.13 - Step 4: Simplify right side
396,178.09x = 117,482,918,895.47 - Step 5: Solve for x
x = 117,482,918,895.47/396,178.09 - Step 6: Final answer
x = 296,540.68
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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.