Finding the Fourth Proportional to 386,209.69, 532,991.27 and 216,454.75
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Solution
The fourth proportional to 386,209.69, 532,991.27 and 216,454.75 is: 298,719.83
Step by Step Solution
- Step 1: Write the proportion equation
386,209.69 : 532,991.27 = 216,454.75 : x - Step 2: Convert to fraction form
386,209.69/532,991.27 = 216,454.75/x - Step 3: Cross multiply
386,209.69x = 532,991.27 × 216,454.75 - Step 4: Simplify right side
386,209.69x = 115,368,491,308.69 - Step 5: Solve for x
x = 115,368,491,308.69/386,209.69 - Step 6: Final answer
x = 298,719.83
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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.