Finding the Fourth Proportional to 396,315.99, 547,013.35 and 243,390.62
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Solution
The fourth proportional to 396,315.99, 547,013.35 and 243,390.62 is: 335,938.80
Step by Step Solution
- Step 1: Write the proportion equation
396,315.99 : 547,013.35 = 243,390.62 : x - Step 2: Convert to fraction form
396,315.99/547,013.35 = 243,390.62/x - Step 3: Cross multiply
396,315.99x = 547,013.35 × 243,390.62 - Step 4: Simplify right side
396,315.99x = 133,137,920,076.55 - Step 5: Solve for x
x = 133,137,920,076.55/396,315.99 - Step 6: Final answer
x = 335,938.80
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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.