Finding the Fourth Proportional to 315,016.95, 434,530.12 and 201,642.87
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Solution
The fourth proportional to 315,016.95, 434,530.12 and 201,642.87 is: 278,143.45
Step by Step Solution
- Step 1: Write the proportion equation
315,016.95 : 434,530.12 = 201,642.87 : x - Step 2: Convert to fraction form
315,016.95/434,530.12 = 201,642.87/x - Step 3: Cross multiply
315,016.95x = 434,530.12 × 201,642.87 - Step 4: Simplify right side
315,016.95x = 87,619,900,498.24 - Step 5: Solve for x
x = 87,619,900,498.24/315,016.95 - Step 6: Final answer
x = 278,143.45
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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.