Finding the Fourth Proportional to 256,317,685.84, 353,720,104.74 and 138,843,016.12
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Solution
The fourth proportional to 256,317,685.84, 353,720,104.74 and 138,843,016.12 is: 191,604,282.18
Step by Step Solution
- Step 1: Write the proportion equation
256,317,685.84 : 353,720,104.74 = 138,843,016.12 : x - Step 2: Convert to fraction form
256,317,685.84/353,720,104.74 = 138,843,016.12/x - Step 3: Cross multiply
256,317,685.84x = 353,720,104.74 × 138,843,016.12 - Step 4: Simplify right side
256,317,685.84x = 49,111,566,204,383,912 - Step 5: Solve for x
x = 49,111,566,204,383,912/256,317,685.84 - Step 6: Final answer
x = 191,604,282.18
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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.