Finding the Fourth Proportional to 256,241,631.68, 353,611,603.38 and 138,764,236.67
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Solution
The fourth proportional to 256,241,631.68, 353,611,603.38 and 138,764,236.67 is: 191,493,645.66
Step by Step Solution
- Step 1: Write the proportion equation
256,241,631.68 : 353,611,603.38 = 138,764,236.67 : x - Step 2: Convert to fraction form
256,241,631.68/353,611,603.38 = 138,764,236.67/x - Step 3: Cross multiply
256,241,631.68x = 353,611,603.38 × 138,764,236.67 - Step 4: Simplify right side
256,241,631.68x = 49,068,644,220,680,488 - Step 5: Solve for x
x = 49,068,644,220,680,488/256,241,631.68 - Step 6: Final answer
x = 191,493,645.66
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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.