Finding the Fourth Proportional to 386,874.12, 533,909.98 and 217,108.26
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Solution
The fourth proportional to 386,874.12, 533,909.98 and 217,108.26 is: 299,622.70
Step by Step Solution
- Step 1: Write the proportion equation
386,874.12 : 533,909.98 = 217,108.26 : x - Step 2: Convert to fraction form
386,874.12/533,909.98 = 217,108.26/x - Step 3: Cross multiply
386,874.12x = 533,909.98 × 217,108.26 - Step 4: Simplify right side
386,874.12x = 115,916,266,754.44 - Step 5: Solve for x
x = 115,916,266,754.44/386,874.12 - Step 6: Final answer
x = 299,622.70
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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.