Finding the Fourth Proportional to 286,920.14, 395,934.09 and 157,856.18
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Solution
The fourth proportional to 286,920.14, 395,934.09 and 157,856.18 is: 217,832.89
Step by Step Solution
- Step 1: Write the proportion equation
286,920.14 : 395,934.09 = 157,856.18 : x - Step 2: Convert to fraction form
286,920.14/395,934.09 = 157,856.18/x - Step 3: Cross multiply
286,920.14x = 395,934.09 × 157,856.18 - Step 4: Simplify right side
286,920.14x = 62,500,642,979.18 - Step 5: Solve for x
x = 62,500,642,979.18/286,920.14 - Step 6: Final answer
x = 217,832.89
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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.