Finding the Fourth Proportional to 394,563,121.20, 591,844,681.80 and 213,164,593.20
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Solution
The fourth proportional to 394,563,121.20, 591,844,681.80 and 213,164,593.20 is: 319,746,889.80
Step by Step Solution
- Step 1: Write the proportion equation
394,563,121.20 : 591,844,681.80 = 213,164,593.20 : x - Step 2: Convert to fraction form
394,563,121.20/591,844,681.80 = 213,164,593.20/x - Step 3: Cross multiply
394,563,121.20x = 591,844,681.80 × 213,164,593.20 - Step 4: Simplify right side
394,563,121.20x = 126,160,330,833,480,432 - Step 5: Solve for x
x = 126,160,330,833,480,432/394,563,121.20 - Step 6: Final answer
x = 319,746,889.80
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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.