Finding the Fourth Proportional to 351,968.40, 527,953.68 and 85,728.96
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Solution
The fourth proportional to 351,968.40, 527,953.68 and 85,728.96 is: 128,593.70
Step by Step Solution
- Step 1: Write the proportion equation
351,968.40 : 527,953.68 = 85,728.96 : x - Step 2: Convert to fraction form
351,968.40/527,953.68 = 85,728.96/x - Step 3: Cross multiply
351,968.40x = 527,953.68 × 85,728.96 - Step 4: Simplify right side
351,968.40x = 45,260,919,914.57 - Step 5: Solve for x
x = 45,260,919,914.57/351,968.40 - Step 6: Final answer
x = 128,593.70
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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.