Finding the Fourth Proportional to 312,663,618.80, 468,995,428.20 and 266,306,217.20
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Solution
The fourth proportional to 312,663,618.80, 468,995,428.20 and 266,306,217.20 is: 399,459,325.80
Step by Step Solution
- Step 1: Write the proportion equation
312,663,618.80 : 468,995,428.20 = 266,306,217.20 : x - Step 2: Convert to fraction form
312,663,618.80/468,995,428.20 = 266,306,217.20/x - Step 3: Cross multiply
312,663,618.80x = 468,995,428.20 × 266,306,217.20 - Step 4: Simplify right side
312,663,618.80x = 124,896,398,368,036,192 - Step 5: Solve for x
x = 124,896,398,368,036,192/312,663,618.80 - Step 6: Final answer
x = 399,459,325.80
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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.