Finding the Fourth Proportional to 509,138.94, 702,612.20 and 279,711.08
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Solution
The fourth proportional to 509,138.94, 702,612.20 and 279,711.08 is: 386,001.54
Step by Step Solution
- Step 1: Write the proportion equation
509,138.94 : 702,612.20 = 279,711.08 : x - Step 2: Convert to fraction form
509,138.94/702,612.20 = 279,711.08/x - Step 3: Cross multiply
509,138.94x = 702,612.20 × 279,711.08 - Step 4: Simplify right side
509,138.94x = 196,528,417,283.18 - Step 5: Solve for x
x = 196,528,417,283.18/509,138.94 - Step 6: Final answer
x = 386,001.54
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.