Finding the Fourth Proportional to 226,765.21, 312,948.92 and 129,985.18
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Solution
The fourth proportional to 226,765.21, 312,948.92 and 129,985.18 is: 179,386.96
Step by Step Solution
- Step 1: Write the proportion equation
226,765.21 : 312,948.92 = 129,985.18 : x - Step 2: Convert to fraction form
226,765.21/312,948.92 = 129,985.18/x - Step 3: Cross multiply
226,765.21x = 312,948.92 × 129,985.18 - Step 4: Simplify right side
226,765.21x = 40,678,721,388.60 - Step 5: Solve for x
x = 40,678,721,388.60/226,765.21 - Step 6: Final answer
x = 179,386.96
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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.