Finding the Fourth Proportional to 393,126.48, 542,534.04 and 221,098.68
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Solution
The fourth proportional to 393,126.48, 542,534.04 and 221,098.68 is: 305,127.14
Step by Step Solution
- Step 1: Write the proportion equation
393,126.48 : 542,534.04 = 221,098.68 : x - Step 2: Convert to fraction form
393,126.48/542,534.04 = 221,098.68/x - Step 3: Cross multiply
393,126.48x = 542,534.04 × 221,098.68 - Step 4: Simplify right side
393,126.48x = 119,953,560,099.07 - Step 5: Solve for x
x = 119,953,560,099.07/393,126.48 - Step 6: Final answer
x = 305,127.14
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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.