Finding the Fourth Proportional to 190,306,000.20, 285,459,000.30 and 180,480,246.60
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Solution
The fourth proportional to 190,306,000.20, 285,459,000.30 and 180,480,246.60 is: 270,720,369.90
Step by Step Solution
- Step 1: Write the proportion equation
190,306,000.20 : 285,459,000.30 = 180,480,246.60 : x - Step 2: Convert to fraction form
190,306,000.20/285,459,000.30 = 180,480,246.60/x - Step 3: Cross multiply
190,306,000.20x = 285,459,000.30 × 180,480,246.60 - Step 4: Simplify right side
190,306,000.20x = 51,519,710,768,333,472 - Step 5: Solve for x
x = 51,519,710,768,333,472/190,306,000.20 - Step 6: Final answer
x = 270,720,369.90
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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.