Finding the Fourth Proportional to 386,384.24, 579,167.28 and 129,972.70
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Solution
The fourth proportional to 386,384.24, 579,167.28 and 129,972.70 is: 194,821.44
Step by Step Solution
- Step 1: Write the proportion equation
386,384.24 : 579,167.28 = 129,972.70 : x - Step 2: Convert to fraction form
386,384.24/579,167.28 = 129,972.70/x - Step 3: Cross multiply
386,384.24x = 579,167.28 × 129,972.70 - Step 4: Simplify right side
386,384.24x = 75,275,935,133.26 - Step 5: Solve for x
x = 75,275,935,133.26/386,384.24 - Step 6: Final answer
x = 194,821.44
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.