Finding the Fourth Proportional to 283,142.16, 390,736.26 and 155,817.76
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Solution
The fourth proportional to 283,142.16, 390,736.26 and 155,817.76 is: 215,028.55
Step by Step Solution
- Step 1: Write the proportion equation
283,142.16 : 390,736.26 = 155,817.76 : x - Step 2: Convert to fraction form
283,142.16/390,736.26 = 155,817.76/x - Step 3: Cross multiply
283,142.16x = 390,736.26 × 155,817.76 - Step 4: Simplify right side
283,142.16x = 60,883,648,783.98 - Step 5: Solve for x
x = 60,883,648,783.98/283,142.16 - Step 6: Final answer
x = 215,028.55
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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.