Finding the Fourth Proportional to 512,861.60, 769,434.60 and 213,483.20
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Solution
The fourth proportional to 512,861.60, 769,434.60 and 213,483.20 is: 320,283.99
Step by Step Solution
- Step 1: Write the proportion equation
512,861.60 : 769,434.60 = 213,483.20 : x - Step 2: Convert to fraction form
512,861.60/769,434.60 = 213,483.20/x - Step 3: Cross multiply
512,861.60x = 769,434.60 × 213,483.20 - Step 4: Simplify right side
512,861.60x = 164,261,360,598.72 - Step 5: Solve for x
x = 164,261,360,598.72/512,861.60 - Step 6: Final answer
x = 320,283.99
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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.