Finding the Fourth Proportional to 280,691.84, 387,350.19 and 153,364.70
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Solution
The fourth proportional to 280,691.84, 387,350.19 and 153,364.70 is: 211,640.80
Step by Step Solution
- Step 1: Write the proportion equation
280,691.84 : 387,350.19 = 153,364.70 : x - Step 2: Convert to fraction form
280,691.84/387,350.19 = 153,364.70/x - Step 3: Cross multiply
280,691.84x = 387,350.19 × 153,364.70 - Step 4: Simplify right side
280,691.84x = 59,405,843,747.54 - Step 5: Solve for x
x = 59,405,843,747.54/280,691.84 - Step 6: Final answer
x = 211,640.80
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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.