Finding the Fourth Proportional to 257,423.40, 386,135.10 and 248,821.80
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Solution
The fourth proportional to 257,423.40, 386,135.10 and 248,821.80 is: 373,232.70
Step by Step Solution
- Step 1: Write the proportion equation
257,423.40 : 386,135.10 = 248,821.80 : x - Step 2: Convert to fraction form
257,423.40/386,135.10 = 248,821.80/x - Step 3: Cross multiply
257,423.40x = 386,135.10 × 248,821.80 - Step 4: Simplify right side
257,423.40x = 96,078,830,625.18 - Step 5: Solve for x
x = 96,078,830,625.18/257,423.40 - Step 6: Final answer
x = 373,232.70
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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.