Finding the Fourth Proportional to 386,553.20, 533,447.28 and 216,783.68
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Solution
The fourth proportional to 386,553.20, 533,447.28 and 216,783.68 is: 299,163.65
Step by Step Solution
- Step 1: Write the proportion equation
386,553.20 : 533,447.28 = 216,783.68 : x - Step 2: Convert to fraction form
386,553.20/533,447.28 = 216,783.68/x - Step 3: Cross multiply
386,553.20x = 533,447.28 × 216,783.68 - Step 4: Simplify right side
386,553.20x = 115,642,664,444.39 - Step 5: Solve for x
x = 115,642,664,444.39/386,553.20 - Step 6: Final answer
x = 299,163.65
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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.