Finding the Fourth Proportional to 312,467,504.42, 431,204,377.29 and 173,234,682.02
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Solution
The fourth proportional to 312,467,504.42, 431,204,377.29 and 173,234,682.02 is: 239,063,429.41
Step by Step Solution
- Step 1: Write the proportion equation
312,467,504.42 : 431,204,377.29 = 173,234,682.02 : x - Step 2: Convert to fraction form
312,467,504.42/431,204,377.29 = 173,234,682.02/x - Step 3: Cross multiply
312,467,504.42x = 431,204,377.29 × 173,234,682.02 - Step 4: Simplify right side
312,467,504.42x = 74,699,553,185,465,264 - Step 5: Solve for x
x = 74,699,553,185,465,264/312,467,504.42 - Step 6: Final answer
x = 239,063,429.41
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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.