Finding the Fourth Proportional to 221,708.10, 332,562.15 and 128,165.70
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Solution
The fourth proportional to 221,708.10, 332,562.15 and 128,165.70 is: 192,248.55
Step by Step Solution
- Step 1: Write the proportion equation
221,708.10 : 332,562.15 = 128,165.70 : x - Step 2: Convert to fraction form
221,708.10/332,562.15 = 128,165.70/x - Step 3: Cross multiply
221,708.10x = 332,562.15 × 128,165.70 - Step 4: Simplify right side
221,708.10x = 42,623,060,748.26 - Step 5: Solve for x
x = 42,623,060,748.26/221,708.10 - Step 6: Final answer
x = 192,248.55
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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.