Finding the Fourth Proportional to 331,776,139.80, 497,664,209.70 and 251,154,571.80
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Solution
The fourth proportional to 331,776,139.80, 497,664,209.70 and 251,154,571.80 is: 376,731,857.70
Step by Step Solution
- Step 1: Write the proportion equation
331,776,139.80 : 497,664,209.70 = 251,154,571.80 : x - Step 2: Convert to fraction form
331,776,139.80/497,664,209.70 = 251,154,571.80/x - Step 3: Cross multiply
331,776,139.80x = 497,664,209.70 × 251,154,571.80 - Step 4: Simplify right side
331,776,139.80x = 124,990,641,487,388,912 - Step 5: Solve for x
x = 124,990,641,487,388,912/331,776,139.80 - Step 6: Final answer
x = 376,731,857.70
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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.