Finding the Fourth Proportional to 396,729.36, 547,484.81 and 215,439.80
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Solution
The fourth proportional to 396,729.36, 547,484.81 and 215,439.80 is: 297,305.99
Step by Step Solution
- Step 1: Write the proportion equation
396,729.36 : 547,484.81 = 215,439.80 : x - Step 2: Convert to fraction form
396,729.36/547,484.81 = 215,439.80/x - Step 3: Cross multiply
396,729.36x = 547,484.81 × 215,439.80 - Step 4: Simplify right side
396,729.36x = 117,950,014,154.82 - Step 5: Solve for x
x = 117,950,014,154.82/396,729.36 - Step 6: Final answer
x = 297,305.99
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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.