Finding the Fourth Proportional to 388,598,371.40, 536,264,841.66 and 221,334,600.44
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Solution
The fourth proportional to 388,598,371.40, 536,264,841.66 and 221,334,600.44 is: 305,441,229.80
Step by Step Solution
- Step 1: Write the proportion equation
388,598,371.40 : 536,264,841.66 = 221,334,600.44 : x - Step 2: Convert to fraction form
388,598,371.40/536,264,841.66 = 221,334,600.44/x - Step 3: Cross multiply
388,598,371.40x = 536,264,841.66 × 221,334,600.44 - Step 4: Simplify right side
388,598,371.40x = 118,693,964,458,835,968 - Step 5: Solve for x
x = 118,693,964,458,835,968/388,598,371.40 - Step 6: Final answer
x = 305,441,229.80
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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.