Finding the Fourth Proportional to 172,459,696.80, 258,689,545.20 and 149,784,880.80
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Solution
The fourth proportional to 172,459,696.80, 258,689,545.20 and 149,784,880.80 is: 224,677,321.20
Step by Step Solution
- Step 1: Write the proportion equation
172,459,696.80 : 258,689,545.20 = 149,784,880.80 : x - Step 2: Convert to fraction form
172,459,696.80/258,689,545.20 = 149,784,880.80/x - Step 3: Cross multiply
172,459,696.80x = 258,689,545.20 × 149,784,880.80 - Step 4: Simplify right side
172,459,696.80x = 38,747,782,691,988,216 - Step 5: Solve for x
x = 38,747,782,691,988,216/172,459,696.80 - Step 6: Final answer
x = 224,677,321.20
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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.