Finding the Fourth Proportional to 285,053.76, 393,368.64 and 157,729.44
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Solution
The fourth proportional to 285,053.76, 393,368.64 and 157,729.44 is: 217,663.56
Step by Step Solution
- Step 1: Write the proportion equation
285,053.76 : 393,368.64 = 157,729.44 : x - Step 2: Convert to fraction form
285,053.76/393,368.64 = 157,729.44/x - Step 3: Cross multiply
285,053.76x = 393,368.64 × 157,729.44 - Step 4: Simplify right side
285,053.76x = 62,045,815,300.76 - Step 5: Solve for x
x = 62,045,815,300.76/285,053.76 - Step 6: Final answer
x = 217,663.56
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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.