Finding the Fourth Proportional to 147,631.80, 221,447.70 and 141,799.80
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Solution
The fourth proportional to 147,631.80, 221,447.70 and 141,799.80 is: 212,699.70
Step by Step Solution
- Step 1: Write the proportion equation
147,631.80 : 221,447.70 = 141,799.80 : x - Step 2: Convert to fraction form
147,631.80/221,447.70 = 141,799.80/x - Step 3: Cross multiply
147,631.80x = 221,447.70 × 141,799.80 - Step 4: Simplify right side
147,631.80x = 31,401,239,570.46 - Step 5: Solve for x
x = 31,401,239,570.46/147,631.80 - Step 6: Final answer
x = 212,699.70
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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.