Finding the Fourth Proportional to 284,880.36, 393,128.16 and 157,553.28
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Solution
The fourth proportional to 284,880.36, 393,128.16 and 157,553.28 is: 217,419.80
Step by Step Solution
- Step 1: Write the proportion equation
284,880.36 : 393,128.16 = 157,553.28 : x - Step 2: Convert to fraction form
284,880.36/393,128.16 = 157,553.28/x - Step 3: Cross multiply
284,880.36x = 393,128.16 × 157,553.28 - Step 4: Simplify right side
284,880.36x = 61,938,631,068.36 - Step 5: Solve for x
x = 61,938,631,068.36/284,880.36 - Step 6: Final answer
x = 217,419.80
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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.