Finding the Fourth Proportional to 396,279.17, 546,866.30 and 214,991.09
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Solution
The fourth proportional to 396,279.17, 546,866.30 and 214,991.09 is: 296,688.27
Step by Step Solution
- Step 1: Write the proportion equation
396,279.17 : 546,866.30 = 214,991.09 : x - Step 2: Convert to fraction form
396,279.17/546,866.30 = 214,991.09/x - Step 3: Cross multiply
396,279.17x = 546,866.30 × 214,991.09 - Step 4: Simplify right side
396,279.17x = 117,571,378,111.98 - Step 5: Solve for x
x = 117,571,378,111.98/396,279.17 - Step 6: Final answer
x = 296,688.27
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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.