Finding the Fourth Proportional to 309,490.84, 424,315.91 and 303,892.12
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Solution
The fourth proportional to 309,490.84, 424,315.91 and 303,892.12 is: 416,639.99
Step by Step Solution
- Step 1: Write the proportion equation
309,490.84 : 424,315.91 = 303,892.12 : x - Step 2: Convert to fraction form
309,490.84/424,315.91 = 303,892.12/x - Step 3: Cross multiply
309,490.84x = 424,315.91 × 303,892.12 - Step 4: Simplify right side
309,490.84x = 128,946,261,439.63 - Step 5: Solve for x
x = 128,946,261,439.63/309,490.84 - Step 6: Final answer
x = 416,639.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.