Finding the Fourth Proportional to 255,780,872.68, 352,977,355.38 and 138,305,921.80
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Solution
The fourth proportional to 255,780,872.68, 352,977,355.38 and 138,305,921.80 is: 190,862,037.49
Step by Step Solution
- Step 1: Write the proportion equation
255,780,872.68 : 352,977,355.38 = 138,305,921.80 : x - Step 2: Convert to fraction form
255,780,872.68/352,977,355.38 = 138,305,921.80/x - Step 3: Cross multiply
255,780,872.68x = 352,977,355.38 × 138,305,921.80 - Step 4: Simplify right side
255,780,872.68x = 48,818,858,510,357,096 - Step 5: Solve for x
x = 48,818,858,510,357,096/255,780,872.68 - Step 6: Final answer
x = 190,862,037.49
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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.