Finding the Fourth Proportional to 283,140.32, 390,733.70 and 155,815.92
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Solution
The fourth proportional to 283,140.32, 390,733.70 and 155,815.92 is: 215,025.99
Step by Step Solution
- Step 1: Write the proportion equation
283,140.32 : 390,733.70 = 155,815.92 : x - Step 2: Convert to fraction form
283,140.32/390,733.70 = 155,815.92/x - Step 3: Cross multiply
283,140.32x = 390,733.70 × 155,815.92 - Step 4: Simplify right side
283,140.32x = 60,882,528,986.84 - Step 5: Solve for x
x = 60,882,528,986.84/283,140.32 - Step 6: Final answer
x = 215,025.99
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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.