Finding the Fourth Proportional to 274,611.88, 378,931.14 and 153,743.68
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Solution
The fourth proportional to 274,611.88, 378,931.14 and 153,743.68 is: 212,147.66
Step by Step Solution
- Step 1: Write the proportion equation
274,611.88 : 378,931.14 = 153,743.68 : x - Step 2: Convert to fraction form
274,611.88/378,931.14 = 153,743.68/x - Step 3: Cross multiply
274,611.88x = 378,931.14 × 153,743.68 - Step 4: Simplify right side
274,611.88x = 58,258,267,930.20 - Step 5: Solve for x
x = 58,258,267,930.20/274,611.88 - Step 6: Final answer
x = 212,147.66
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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.