Finding the Fourth Proportional to 386,702.79, 533,653.49 and 216,940.56
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Solution
The fourth proportional to 386,702.79, 533,653.49 and 216,940.56 is: 299,380.01
Step by Step Solution
- Step 1: Write the proportion equation
386,702.79 : 533,653.49 = 216,940.56 : x - Step 2: Convert to fraction form
386,702.79/533,653.49 = 216,940.56/x - Step 3: Cross multiply
386,702.79x = 533,653.49 × 216,940.56 - Step 4: Simplify right side
386,702.79x = 115,771,086,966.55 - Step 5: Solve for x
x = 115,771,086,966.55/386,702.79 - Step 6: Final answer
x = 299,380.01
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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.