Finding the Fourth Proportional to 355,904,951.78, 491,153,903.74 and 205,194,626.12
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Solution
The fourth proportional to 355,904,951.78, 491,153,903.74 and 205,194,626.12 is: 283,171,507.28
Step by Step Solution
- Step 1: Write the proportion equation
355,904,951.78 : 491,153,903.74 = 205,194,626.12 : x - Step 2: Convert to fraction form
355,904,951.78/491,153,903.74 = 205,194,626.12/x - Step 3: Cross multiply
355,904,951.78x = 491,153,903.74 × 205,194,626.12 - Step 4: Simplify right side
355,904,951.78x = 100,782,141,645,307,776 - Step 5: Solve for x
x = 100,782,141,645,307,776/355,904,951.78 - Step 6: Final answer
x = 283,171,507.28
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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.