Finding the Fourth Proportional to 239,970.24, 331,222.98 and 138,006.84
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Solution
The fourth proportional to 239,970.24, 331,222.98 and 138,006.84 is: 190,486.27
Step by Step Solution
- Step 1: Write the proportion equation
239,970.24 : 331,222.98 = 138,006.84 : x - Step 2: Convert to fraction form
239,970.24/331,222.98 = 138,006.84/x - Step 3: Cross multiply
239,970.24x = 331,222.98 × 138,006.84 - Step 4: Simplify right side
239,970.24x = 45,711,036,805.18 - Step 5: Solve for x
x = 45,711,036,805.18/239,970.24 - Step 6: Final answer
x = 190,486.27
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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.