Finding the Fourth Proportional to 252,122.32, 347,928.86 and 137,400.99
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Solution
The fourth proportional to 252,122.32, 347,928.86 and 137,400.99 is: 189,613.40
Step by Step Solution
- Step 1: Write the proportion equation
252,122.32 : 347,928.86 = 137,400.99 : x - Step 2: Convert to fraction form
252,122.32/347,928.86 = 137,400.99/x - Step 3: Cross multiply
252,122.32x = 347,928.86 × 137,400.99 - Step 4: Simplify right side
252,122.32x = 47,805,769,813.57 - Step 5: Solve for x
x = 47,805,769,813.57/252,122.32 - Step 6: Final answer
x = 189,613.40
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1.5x scale
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.