Finding the Fourth Proportional to 495,257.31, 683,448.08 and 280,391.79
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Solution
The fourth proportional to 495,257.31, 683,448.08 and 280,391.79 is: 386,936.70
Step by Step Solution
- Step 1: Write the proportion equation
495,257.31 : 683,448.08 = 280,391.79 : x - Step 2: Convert to fraction form
495,257.31/683,448.08 = 280,391.79/x - Step 3: Cross multiply
495,257.31x = 683,448.08 × 280,391.79 - Step 4: Simplify right side
495,257.31x = 191,633,229,121.30 - Step 5: Solve for x
x = 191,633,229,121.30/495,257.31 - Step 6: Final answer
x = 386,936.70
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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.