Finding the Fourth Proportional to 268,929.36, 403,299.99 and 79,339.38
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Solution
The fourth proportional to 268,929.36, 403,299.99 and 79,339.38 is: 118,981.32
Step by Step Solution
- Step 1: Write the proportion equation
268,929.36 : 403,299.99 = 79,339.38 : x - Step 2: Convert to fraction form
268,929.36/403,299.99 = 79,339.38/x - Step 3: Cross multiply
268,929.36x = 403,299.99 × 79,339.38 - Step 4: Simplify right side
268,929.36x = 31,997,569,144.11 - Step 5: Solve for x
x = 31,997,569,144.11/268,929.36 - Step 6: Final answer
x = 118,981.32
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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.