Finding the Fourth Proportional to 312,197.12, 468,295.70 and 75,539.80
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Solution
The fourth proportional to 312,197.12, 468,295.70 and 75,539.80 is: 113,309.70
Step by Step Solution
- Step 1: Write the proportion equation
312,197.12 : 468,295.70 = 75,539.80 : x - Step 2: Convert to fraction form
312,197.12/468,295.70 = 75,539.80/x - Step 3: Cross multiply
312,197.12x = 468,295.70 × 75,539.80 - Step 4: Simplify right side
312,197.12x = 35,374,961,970.42 - Step 5: Solve for x
x = 35,374,961,970.42/312,197.12 - Step 6: Final answer
x = 113,309.70
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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.