Finding the Fourth Proportional to 312,261.68, 468,390.36 and 75,605.60
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Solution
The fourth proportional to 312,261.68, 468,390.36 and 75,605.60 is: 113,407.88
Step by Step Solution
- Step 1: Write the proportion equation
312,261.68 : 468,390.36 = 75,605.60 : x - Step 2: Convert to fraction form
312,261.68/468,390.36 = 75,605.60/x - Step 3: Cross multiply
312,261.68x = 468,390.36 × 75,605.60 - Step 4: Simplify right side
312,261.68x = 35,412,934,202.02 - Step 5: Solve for x
x = 35,412,934,202.02/312,261.68 - Step 6: Final answer
x = 113,407.88
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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.