Finding the Fourth Proportional to 396,466.81, 547,124.74 and 215,178.74
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Solution
The fourth proportional to 396,466.81, 547,124.74 and 215,178.74 is: 296,946.96
Step by Step Solution
- Step 1: Write the proportion equation
396,466.81 : 547,124.74 = 215,178.74 : x - Step 2: Convert to fraction form
396,466.81/547,124.74 = 215,178.74/x - Step 3: Cross multiply
396,466.81x = 547,124.74 × 215,178.74 - Step 4: Simplify right side
396,466.81x = 117,729,612,176.03 - Step 5: Solve for x
x = 117,729,612,176.03/396,466.81 - Step 6: Final answer
x = 296,946.96
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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.