Finding the Fourth Proportional to 283,214.88, 390,836.16 and 155,898.63
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Solution
The fourth proportional to 283,214.88, 390,836.16 and 155,898.63 is: 215,139.90
Step by Step Solution
- Step 1: Write the proportion equation
283,214.88 : 390,836.16 = 155,898.63 : x - Step 2: Convert to fraction form
283,214.88/390,836.16 = 155,898.63/x - Step 3: Cross multiply
283,214.88x = 390,836.16 × 155,898.63 - Step 4: Simplify right side
283,214.88x = 60,930,821,898.46 - Step 5: Solve for x
x = 60,930,821,898.46/283,214.88 - Step 6: Final answer
x = 215,139.90
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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.