Finding the Fourth Proportional to 387,099.45, 580,655.02 and 134,387.98
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Solution
The fourth proportional to 387,099.45, 580,655.02 and 134,387.98 is: 201,583.99
Step by Step Solution
- Step 1: Write the proportion equation
387,099.45 : 580,655.02 = 134,387.98 : x - Step 2: Convert to fraction form
387,099.45/580,655.02 = 134,387.98/x - Step 3: Cross multiply
387,099.45x = 580,655.02 × 134,387.98 - Step 4: Simplify right side
387,099.45x = 78,033,052,338.32 - Step 5: Solve for x
x = 78,033,052,338.32/387,099.45 - Step 6: Final answer
x = 201,583.99
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1.5x scale
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.