Finding the Fourth Proportional to 283,139.21, 390,732.18 and 155,814.80
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Solution
The fourth proportional to 283,139.21, 390,732.18 and 155,814.80 is: 215,024.46
Step by Step Solution
- Step 1: Write the proportion equation
283,139.21 : 390,732.18 = 155,814.80 : x - Step 2: Convert to fraction form
283,139.21/390,732.18 = 155,814.80/x - Step 3: Cross multiply
283,139.21x = 390,732.18 × 155,814.80 - Step 4: Simplify right side
283,139.21x = 60,881,856,480.26 - Step 5: Solve for x
x = 60,881,856,480.26/283,139.21 - Step 6: Final answer
x = 215,024.46
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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.