Finding the Fourth Proportional to 207,623.30, 311,434.95 and 155,135.30
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Solution
The fourth proportional to 207,623.30, 311,434.95 and 155,135.30 is: 232,702.95
Step by Step Solution
- Step 1: Write the proportion equation
207,623.30 : 311,434.95 = 155,135.30 : x - Step 2: Convert to fraction form
207,623.30/311,434.95 = 155,135.30/x - Step 3: Cross multiply
207,623.30x = 311,434.95 × 155,135.30 - Step 4: Simplify right side
207,623.30x = 48,314,554,398.74 - Step 5: Solve for x
x = 48,314,554,398.74/207,623.30 - Step 6: Final answer
x = 232,702.95
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.