Finding the Fourth Proportional to 283,257.49, 390,894.32 and 155,933.09
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Solution
The fourth proportional to 283,257.49, 390,894.32 and 155,933.09 is: 215,187.10
Step by Step Solution
- Step 1: Write the proportion equation
283,257.49 : 390,894.32 = 155,933.09 : x - Step 2: Convert to fraction form
283,257.49/390,894.32 = 155,933.09/x - Step 3: Cross multiply
283,257.49x = 390,894.32 × 155,933.09 - Step 4: Simplify right side
283,257.49x = 60,953,359,181.05 - Step 5: Solve for x
x = 60,953,359,181.05/283,257.49 - Step 6: Final answer
x = 215,187.10
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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.