Finding the Fourth Proportional to 283,138.05, 390,730.28 and 155,813.64
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Solution
The fourth proportional to 283,138.05, 390,730.28 and 155,813.64 is: 215,022.70
Step by Step Solution
- Step 1: Write the proportion equation
283,138.05 : 390,730.28 = 155,813.64 : x - Step 2: Convert to fraction form
283,138.05/390,730.28 = 155,813.64/x - Step 3: Cross multiply
283,138.05x = 390,730.28 × 155,813.64 - Step 4: Simplify right side
283,138.05x = 60,881,108,015.02 - Step 5: Solve for x
x = 60,881,108,015.02/283,138.05 - Step 6: Final answer
x = 215,022.70
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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.