Finding the Fourth Proportional to 420,639.64, 580,549.36 and 267,518.18
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Solution
The fourth proportional to 420,639.64, 580,549.36 and 267,518.18 is: 369,217.48
Step by Step Solution
- Step 1: Write the proportion equation
420,639.64 : 580,549.36 = 267,518.18 : x - Step 2: Convert to fraction form
420,639.64/580,549.36 = 267,518.18/x - Step 3: Cross multiply
420,639.64x = 580,549.36 × 267,518.18 - Step 4: Simplify right side
420,639.64x = 155,307,508,187.37 - Step 5: Solve for x
x = 155,307,508,187.37/420,639.64 - Step 6: Final answer
x = 369,217.48
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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.