Finding the Fourth Proportional to 354,375,902.40, 531,563,853.60 and 217,617,835.20
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Solution
The fourth proportional to 354,375,902.40, 531,563,853.60 and 217,617,835.20 is: 326,426,752.80
Step by Step Solution
- Step 1: Write the proportion equation
354,375,902.40 : 531,563,853.60 = 217,617,835.20 : x - Step 2: Convert to fraction form
354,375,902.40/531,563,853.60 = 217,617,835.20/x - Step 3: Cross multiply
354,375,902.40x = 531,563,853.60 × 217,617,835.20 - Step 4: Simplify right side
354,375,902.40x = 115,677,775,091,001,728 - Step 5: Solve for x
x = 115,677,775,091,001,728/354,375,902.40 - Step 6: Final answer
x = 326,426,752.80
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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.