Finding the Fourth Proportional to 253,706.77, 350,115.38 and 138,989.50
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Solution
The fourth proportional to 253,706.77, 350,115.38 and 138,989.50 is: 191,805.52
Step by Step Solution
- Step 1: Write the proportion equation
253,706.77 : 350,115.38 = 138,989.50 : x - Step 2: Convert to fraction form
253,706.77/350,115.38 = 138,989.50/x - Step 3: Cross multiply
253,706.77x = 350,115.38 × 138,989.50 - Step 4: Simplify right side
253,706.77x = 48,662,359,162.99 - Step 5: Solve for x
x = 48,662,359,162.99/253,706.77 - Step 6: Final answer
x = 191,805.52
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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.