Finding the Fourth Proportional to 257,731,971.49, 386,634,273.60 and 82,796,346.82
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Solution
The fourth proportional to 257,731,971.49, 386,634,273.60 and 82,796,346.82 is: 124,206,186.86
Step by Step Solution
- Step 1: Write the proportion equation
257,731,971.49 : 386,634,273.60 = 82,796,346.82 : x - Step 2: Convert to fraction form
257,731,971.49/386,634,273.60 = 82,796,346.82/x - Step 3: Cross multiply
257,731,971.49x = 386,634,273.60 × 82,796,346.82 - Step 4: Simplify right side
257,731,971.49x = 32,011,905,410,278,152 - Step 5: Solve for x
x = 32,011,905,410,278,152/257,731,971.49 - Step 6: Final answer
x = 124,206,186.86
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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.