Finding the Fourth Proportional to 253,579.12, 349,950.12 and 140,401.88
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Solution
The fourth proportional to 253,579.12, 349,950.12 and 140,401.88 is: 193,760.65
Step by Step Solution
- Step 1: Write the proportion equation
253,579.12 : 349,950.12 = 140,401.88 : x - Step 2: Convert to fraction form
253,579.12/349,950.12 = 140,401.88/x - Step 3: Cross multiply
253,579.12x = 349,950.12 × 140,401.88 - Step 4: Simplify right side
253,579.12x = 49,133,654,754.23 - Step 5: Solve for x
x = 49,133,654,754.23/253,579.12 - Step 6: Final answer
x = 193,760.65
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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.