Finding the Fourth Proportional to 386,190,040.80, 578,837,163.60 and 156,007,999.20
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Solution
The fourth proportional to 386,190,040.80, 578,837,163.60 and 156,007,999.20 is: 233,831,062.99
Step by Step Solution
- Step 1: Write the proportion equation
386,190,040.80 : 578,837,163.60 = 156,007,999.20 : x - Step 2: Convert to fraction form
386,190,040.80/578,837,163.60 = 156,007,999.20/x - Step 3: Cross multiply
386,190,040.80x = 578,837,163.60 × 156,007,999.20 - Step 4: Simplify right side
386,190,040.80x = 90,303,227,755,839,072 - Step 5: Solve for x
x = 90,303,227,755,839,072/386,190,040.80 - Step 6: Final answer
x = 233,831,062.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.