Finding the Fourth Proportional to 320,872.98, 442,665.68 and 193,477.80
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Solution
The fourth proportional to 320,872.98, 442,665.68 and 193,477.80 is: 266,915.53
Step by Step Solution
- Step 1: Write the proportion equation
320,872.98 : 442,665.68 = 193,477.80 : x - Step 2: Convert to fraction form
320,872.98/442,665.68 = 193,477.80/x - Step 3: Cross multiply
320,872.98x = 442,665.68 × 193,477.80 - Step 4: Simplify right side
320,872.98x = 85,645,981,901.90 - Step 5: Solve for x
x = 85,645,981,901.90/320,872.98 - Step 6: Final answer
x = 266,915.53
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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.