Finding the Fourth Proportional to 454,343.40, 681,515.10 and 155,161.80
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Solution
The fourth proportional to 454,343.40, 681,515.10 and 155,161.80 is: 232,742.70
Step by Step Solution
- Step 1: Write the proportion equation
454,343.40 : 681,515.10 = 155,161.80 : x - Step 2: Convert to fraction form
454,343.40/681,515.10 = 155,161.80/x - Step 3: Cross multiply
454,343.40x = 681,515.10 × 155,161.80 - Step 4: Simplify right side
454,343.40x = 105,745,109,643.18 - Step 5: Solve for x
x = 105,745,109,643.18/454,343.40 - Step 6: Final answer
x = 232,742.70
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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.