Finding the Fourth Proportional to 311,956,611.04, 430,524,361.20 and 172,740,325.60
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Solution
The fourth proportional to 311,956,611.04, 430,524,361.20 and 172,740,325.60 is: 238,395,070.66
Step by Step Solution
- Step 1: Write the proportion equation
311,956,611.04 : 430,524,361.20 = 172,740,325.60 : x - Step 2: Convert to fraction form
311,956,611.04/430,524,361.20 = 172,740,325.60/x - Step 3: Cross multiply
311,956,611.04x = 430,524,361.20 × 172,740,325.60 - Step 4: Simplify right side
311,956,611.04x = 74,368,918,332,420,000 - Step 5: Solve for x
x = 74,368,918,332,420,000/311,956,611.04 - Step 6: Final answer
x = 238,395,070.66
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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.