Finding the Fourth Proportional to 280,210.44, 386,691.66 and 152,888.70
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Solution
The fourth proportional to 280,210.44, 386,691.66 and 152,888.70 is: 210,987.09
Step by Step Solution
- Step 1: Write the proportion equation
280,210.44 : 386,691.66 = 152,888.70 : x - Step 2: Convert to fraction form
280,210.44/386,691.66 = 152,888.70/x - Step 3: Cross multiply
280,210.44x = 386,691.66 × 152,888.70 - Step 4: Simplify right side
280,210.44x = 59,120,785,198.24 - Step 5: Solve for x
x = 59,120,785,198.24/280,210.44 - Step 6: Final answer
x = 210,987.09
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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.