Finding the Fourth Proportional to 283,305.64, 390,961.84 and 154,244.12
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Solution
The fourth proportional to 283,305.64, 390,961.84 and 154,244.12 is: 212,856.92
Step by Step Solution
- Step 1: Write the proportion equation
283,305.64 : 390,961.84 = 154,244.12 : x - Step 2: Convert to fraction form
283,305.64/390,961.84 = 154,244.12/x - Step 3: Cross multiply
283,305.64x = 390,961.84 × 154,244.12 - Step 4: Simplify right side
283,305.64x = 60,303,564,964.38 - Step 5: Solve for x
x = 60,303,564,964.38/283,305.64 - Step 6: Final answer
x = 212,856.92
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1.5x scale
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.