Finding the Fourth Proportional to 426,612.64, 640,105.80 and 202,133.28
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Solution
The fourth proportional to 426,612.64, 640,105.80 and 202,133.28 is: 303,288.45
Step by Step Solution
- Step 1: Write the proportion equation
426,612.64 : 640,105.80 = 202,133.28 : x - Step 2: Convert to fraction form
426,612.64/640,105.80 = 202,133.28/x - Step 3: Cross multiply
426,612.64x = 640,105.80 × 202,133.28 - Step 4: Simplify right side
426,612.64x = 129,386,684,901.02 - Step 5: Solve for x
x = 129,386,684,901.02/426,612.64 - Step 6: Final answer
x = 303,288.45
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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.