Finding the Fourth Proportional to 283,217.88, 390,840.30 and 155,901.63
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Solution
The fourth proportional to 283,217.88, 390,840.30 and 155,901.63 is: 215,144.04
Step by Step Solution
- Step 1: Write the proportion equation
283,217.88 : 390,840.30 = 155,901.63 : x - Step 2: Convert to fraction form
283,217.88/390,840.30 = 155,901.63/x - Step 3: Cross multiply
283,217.88x = 390,840.30 × 155,901.63 - Step 4: Simplify right side
283,217.88x = 60,932,639,839.69 - Step 5: Solve for x
x = 60,932,639,839.69/283,217.88 - Step 6: Final answer
x = 215,144.04
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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.