Finding the Fourth Proportional to 312,696,794.67, 431,573,306.54 and 173,512,396.77
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Solution
The fourth proportional to 312,696,794.67, 431,573,306.54 and 173,512,396.77 is: 239,475,811.95
Step by Step Solution
- Step 1: Write the proportion equation
312,696,794.67 : 431,573,306.54 = 173,512,396.77 : x - Step 2: Convert to fraction form
312,696,794.67/431,573,306.54 = 173,512,396.77/x - Step 3: Cross multiply
312,696,794.67x = 431,573,306.54 × 173,512,396.77 - Step 4: Simplify right side
312,696,794.67x = 74,883,318,798,841,760 - Step 5: Solve for x
x = 74,883,318,798,841,760/312,696,794.67 - Step 6: Final answer
x = 239,475,811.95
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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.