Finding the Fourth Proportional to 647,731.97, 971,708.69 and 221,244.38
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Solution
The fourth proportional to 647,731.97, 971,708.69 and 221,244.38 is: 331,904.39
Step by Step Solution
- Step 1: Write the proportion equation
647,731.97 : 971,708.69 = 221,244.38 : x - Step 2: Convert to fraction form
647,731.97/971,708.69 = 221,244.38/x - Step 3: Cross multiply
647,731.97x = 971,708.69 × 221,244.38 - Step 4: Simplify right side
647,731.97x = 214,985,082,354.23 - Step 5: Solve for x
x = 214,985,082,354.23/647,731.97 - Step 6: Final answer
x = 331,904.39
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.