Finding the Fourth Proportional to 386,967.18, 533,985.41 and 217,168.50
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Solution
The fourth proportional to 386,967.18, 533,985.41 and 217,168.50 is: 299,676.09
Step by Step Solution
- Step 1: Write the proportion equation
386,967.18 : 533,985.41 = 217,168.50 : x - Step 2: Convert to fraction form
386,967.18/533,985.41 = 217,168.50/x - Step 3: Cross multiply
386,967.18x = 533,985.41 × 217,168.50 - Step 4: Simplify right side
386,967.18x = 115,964,810,511.59 - Step 5: Solve for x
x = 115,964,810,511.59/386,967.18 - Step 6: Final answer
x = 299,676.09
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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.