Finding the Fourth Proportional to 283,241.40, 390,884.28 and 155,928.84
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Solution
The fourth proportional to 283,241.40, 390,884.28 and 155,928.84 is: 215,187.94
Step by Step Solution
- Step 1: Write the proportion equation
283,241.40 : 390,884.28 = 155,928.84 : x - Step 2: Convert to fraction form
283,241.40/390,884.28 = 155,928.84/x - Step 3: Cross multiply
283,241.40x = 390,884.28 × 155,928.84 - Step 4: Simplify right side
283,241.40x = 60,950,132,354.64 - Step 5: Solve for x
x = 60,950,132,354.64/283,241.40 - Step 6: Final answer
x = 215,187.94
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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.