Finding the Fourth Proportional to 280,067.28, 386,488.95 and 152,742.84
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Solution
The fourth proportional to 280,067.28, 386,488.95 and 152,742.84 is: 210,782.99
Step by Step Solution
- Step 1: Write the proportion equation
280,067.28 : 386,488.95 = 152,742.84 : x - Step 2: Convert to fraction form
280,067.28/386,488.95 = 152,742.84/x - Step 3: Cross multiply
280,067.28x = 386,488.95 × 152,742.84 - Step 4: Simplify right side
280,067.28x = 59,033,419,851.62 - Step 5: Solve for x
x = 59,033,419,851.62/280,067.28 - Step 6: Final answer
x = 210,782.99
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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.