Finding the Fourth Proportional to 282,902.15, 390,394.79 and 155,576.84
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Solution
The fourth proportional to 282,902.15, 390,394.79 and 155,576.84 is: 214,690.43
Step by Step Solution
- Step 1: Write the proportion equation
282,902.15 : 390,394.79 = 155,576.84 : x - Step 2: Convert to fraction form
282,902.15/390,394.79 = 155,576.84/x - Step 3: Cross multiply
282,902.15x = 390,394.79 × 155,576.84 - Step 4: Simplify right side
282,902.15x = 60,736,385,634.22 - Step 5: Solve for x
x = 60,736,385,634.22/282,902.15 - Step 6: Final answer
x = 214,690.43
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1.5x scale
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.