Finding the Fourth Proportional to 512,206.66, 768,311.80 and 157,220.70
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Solution
The fourth proportional to 512,206.66, 768,311.80 and 157,220.70 is: 235,831.61
Step by Step Solution
- Step 1: Write the proportion equation
512,206.66 : 768,311.80 = 157,220.70 : x - Step 2: Convert to fraction form
512,206.66/768,311.80 = 157,220.70/x - Step 3: Cross multiply
512,206.66x = 768,311.80 × 157,220.70 - Step 4: Simplify right side
512,206.66x = 120,794,519,014.26 - Step 5: Solve for x
x = 120,794,519,014.26/512,206.66 - Step 6: Final answer
x = 235,831.61
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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.