Finding the Fourth Proportional to 512,000.14, 768,000.18 and 138,023.14
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Solution
The fourth proportional to 512,000.14, 768,000.18 and 138,023.14 is: 207,034.70
Step by Step Solution
- Step 1: Write the proportion equation
512,000.14 : 768,000.18 = 138,023.14 : x - Step 2: Convert to fraction form
512,000.14/768,000.18 = 138,023.14/x - Step 3: Cross multiply
512,000.14x = 768,000.18 × 138,023.14 - Step 4: Simplify right side
512,000.14x = 106,001,796,364.17 - Step 5: Solve for x
x = 106,001,796,364.17/512,000.14 - Step 6: Final answer
x = 207,034.70
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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.