Finding the Fourth Proportional to 386,963.20, 533,979.84 and 217,164.48
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Solution
The fourth proportional to 386,963.20, 533,979.84 and 217,164.48 is: 299,670.50
Step by Step Solution
- Step 1: Write the proportion equation
386,963.20 : 533,979.84 = 217,164.48 : x - Step 2: Convert to fraction form
386,963.20/533,979.84 = 217,164.48/x - Step 3: Cross multiply
386,963.20x = 533,979.84 × 217,164.48 - Step 4: Simplify right side
386,963.20x = 115,961,454,284.08 - Step 5: Solve for x
x = 115,961,454,284.08/386,963.20 - Step 6: Final answer
x = 299,670.50
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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.