Finding the Fourth Proportional to 280,747.58, 387,431.83 and 153,423.18
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Solution
The fourth proportional to 280,747.58, 387,431.83 and 153,423.18 is: 211,724.08
Step by Step Solution
- Step 1: Write the proportion equation
280,747.58 : 387,431.83 = 153,423.18 : x - Step 2: Convert to fraction form
280,747.58/387,431.83 = 153,423.18/x - Step 3: Cross multiply
280,747.58x = 387,431.83 × 153,423.18 - Step 4: Simplify right side
280,747.58x = 59,441,022,380.62 - Step 5: Solve for x
x = 59,441,022,380.62/280,747.58 - Step 6: Final answer
x = 211,724.08
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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.