Finding the Fourth Proportional to 283,207.34, 390,811.29 and 155,858.60
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Solution
The fourth proportional to 283,207.34, 390,811.29 and 155,858.60 is: 215,076.70
Step by Step Solution
- Step 1: Write the proportion equation
283,207.34 : 390,811.29 = 155,858.60 : x - Step 2: Convert to fraction form
283,207.34/390,811.29 = 155,858.60/x - Step 3: Cross multiply
283,207.34x = 390,811.29 × 155,858.60 - Step 4: Simplify right side
283,207.34x = 60,911,300,523.59 - Step 5: Solve for x
x = 60,911,300,523.59/283,207.34 - Step 6: Final answer
x = 215,076.70
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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.