Finding the Fourth Proportional to 386,866.18, 533,913.69 and 217,100.98
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Solution
The fourth proportional to 386,866.18, 533,913.69 and 217,100.98 is: 299,620.88
Step by Step Solution
- Step 1: Write the proportion equation
386,866.18 : 533,913.69 = 217,100.98 : x - Step 2: Convert to fraction form
386,866.18/533,913.69 = 217,100.98/x - Step 3: Cross multiply
386,866.18x = 533,913.69 × 217,100.98 - Step 4: Simplify right side
386,866.18x = 115,913,185,334.42 - Step 5: Solve for x
x = 115,913,185,334.42/386,866.18 - Step 6: Final answer
x = 299,620.88
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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.