Finding the Fourth Proportional to 286,161,071.45, 394,987,915.18 and 167,115,775.53
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Solution
The fourth proportional to 286,161,071.45, 394,987,915.18 and 167,115,775.53 is: 230,669,781.32
Step by Step Solution
- Step 1: Write the proportion equation
286,161,071.45 : 394,987,915.18 = 167,115,775.53 : x - Step 2: Convert to fraction form
286,161,071.45/394,987,915.18 = 167,115,775.53/x - Step 3: Cross multiply
286,161,071.45x = 394,987,915.18 × 167,115,775.53 - Step 4: Simplify right side
286,161,071.45x = 66,008,711,771,973,656 - Step 5: Solve for x
x = 66,008,711,771,973,656/286,161,071.45 - Step 6: Final answer
x = 230,669,781.32
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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.