Finding the Fourth Proportional to 198,145,389.60, 297,218,084.40 and 120,661,291.80
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Solution
The fourth proportional to 198,145,389.60, 297,218,084.40 and 120,661,291.80 is: 180,991,937.70
Step by Step Solution
- Step 1: Write the proportion equation
198,145,389.60 : 297,218,084.40 = 120,661,291.80 : x - Step 2: Convert to fraction form
198,145,389.60/297,218,084.40 = 120,661,291.80/x - Step 3: Cross multiply
198,145,389.60x = 297,218,084.40 × 120,661,291.80 - Step 4: Simplify right side
198,145,389.60x = 35,862,718,010,025,424 - Step 5: Solve for x
x = 35,862,718,010,025,424/198,145,389.60 - Step 6: Final answer
x = 180,991,937.70
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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.