Finding the Fourth Proportional to 660,121.80, 990,182.70 and 161,485.80
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Solution
The fourth proportional to 660,121.80, 990,182.70 and 161,485.80 is: 242,228.70
Step by Step Solution
- Step 1: Write the proportion equation
660,121.80 : 990,182.70 = 161,485.80 : x - Step 2: Convert to fraction form
660,121.80/990,182.70 = 161,485.80/x - Step 3: Cross multiply
660,121.80x = 990,182.70 × 161,485.80 - Step 4: Simplify right side
660,121.80x = 159,900,445,455.66 - Step 5: Solve for x
x = 159,900,445,455.66/660,121.80 - Step 6: Final answer
x = 242,228.70
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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.