Finding the Fourth Proportional to 281,129.70, 387,958.50 and 153,804.99
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Solution
The fourth proportional to 281,129.70, 387,958.50 and 153,804.99 is: 212,250.62
Step by Step Solution
- Step 1: Write the proportion equation
281,129.70 : 387,958.50 = 153,804.99 : x - Step 2: Convert to fraction form
281,129.70/387,958.50 = 153,804.99/x - Step 3: Cross multiply
281,129.70x = 387,958.50 × 153,804.99 - Step 4: Simplify right side
281,129.70x = 59,669,953,212.92 - Step 5: Solve for x
x = 59,669,953,212.92/281,129.70 - Step 6: Final answer
x = 212,250.62
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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.