Finding the Fourth Proportional to 355,904,949.78, 491,153,900.99 and 205,194,624.12
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Solution
The fourth proportional to 355,904,949.78, 491,153,900.99 and 205,194,624.12 is: 283,171,504.53
Step by Step Solution
- Step 1: Write the proportion equation
355,904,949.78 : 491,153,900.99 = 205,194,624.12 : x - Step 2: Convert to fraction form
355,904,949.78/491,153,900.99 = 205,194,624.12/x - Step 3: Cross multiply
355,904,949.78x = 491,153,900.99 × 205,194,624.12 - Step 4: Simplify right side
355,904,949.78x = 100,782,140,097,688,784 - Step 5: Solve for x
x = 100,782,140,097,688,784/355,904,949.78 - Step 6: Final answer
x = 283,171,504.53
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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.