Finding the Fourth Proportional to 256,621,286.54, 354,144,338.84 and 145,128,799.84
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Solution
The fourth proportional to 256,621,286.54, 354,144,338.84 and 145,128,799.84 is: 200,281,681.85
Step by Step Solution
- Step 1: Write the proportion equation
256,621,286.54 : 354,144,338.84 = 145,128,799.84 : x - Step 2: Convert to fraction form
256,621,286.54/354,144,338.84 = 145,128,799.84/x - Step 3: Cross multiply
256,621,286.54x = 354,144,338.84 × 145,128,799.84 - Step 4: Simplify right side
256,621,286.54x = 51,396,542,865,253,848 - Step 5: Solve for x
x = 51,396,542,865,253,848/256,621,286.54 - Step 6: Final answer
x = 200,281,681.85
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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.