Finding the Fourth Proportional to 317,969,161.80, 476,953,742.70 and 172,472,425.80
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Solution
The fourth proportional to 317,969,161.80, 476,953,742.70 and 172,472,425.80 is: 258,708,638.70
Step by Step Solution
- Step 1: Write the proportion equation
317,969,161.80 : 476,953,742.70 = 172,472,425.80 : x - Step 2: Convert to fraction form
317,969,161.80/476,953,742.70 = 172,472,425.80/x - Step 3: Cross multiply
317,969,161.80x = 476,953,742.70 × 172,472,425.80 - Step 4: Simplify right side
317,969,161.80x = 82,261,368,997,858,048 - Step 5: Solve for x
x = 82,261,368,997,858,048/317,969,161.80 - Step 6: Final answer
x = 258,708,638.70
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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.