Finding the Fourth Proportional to 253,607.99, 349,974.74 and 140,428.31
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Solution
The fourth proportional to 253,607.99, 349,974.74 and 140,428.31 is: 193,788.69
Step by Step Solution
- Step 1: Write the proportion equation
253,607.99 : 349,974.74 = 140,428.31 : x - Step 2: Convert to fraction form
253,607.99/349,974.74 = 140,428.31/x - Step 3: Cross multiply
253,607.99x = 349,974.74 × 140,428.31 - Step 4: Simplify right side
253,607.99x = 49,146,359,882.09 - Step 5: Solve for x
x = 49,146,359,882.09/253,607.99 - Step 6: Final answer
x = 193,788.69
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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.