Finding the Fourth Proportional to 257,421.80, 386,132.70 and 195,213.80
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Solution
The fourth proportional to 257,421.80, 386,132.70 and 195,213.80 is: 292,820.70
Step by Step Solution
- Step 1: Write the proportion equation
257,421.80 : 386,132.70 = 195,213.80 : x - Step 2: Convert to fraction form
257,421.80/386,132.70 = 195,213.80/x - Step 3: Cross multiply
257,421.80x = 386,132.70 × 195,213.80 - Step 4: Simplify right side
257,421.80x = 75,378,431,671.26 - Step 5: Solve for x
x = 75,378,431,671.26/257,421.80 - Step 6: Final answer
x = 292,820.70
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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.