Finding the Fourth Proportional to 396,799.68, 547,210.55 and 306,011.84
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Solution
The fourth proportional to 396,799.68, 547,210.55 and 306,011.84 is: 422,008.66
Step by Step Solution
- Step 1: Write the proportion equation
396,799.68 : 547,210.55 = 306,011.84 : x - Step 2: Convert to fraction form
396,799.68/547,210.55 = 306,011.84/x - Step 3: Cross multiply
396,799.68x = 547,210.55 × 306,011.84 - Step 4: Simplify right side
396,799.68x = 167,452,903,006.80 - Step 5: Solve for x
x = 167,452,903,006.80/396,799.68 - Step 6: Final answer
x = 422,008.66
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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.