Finding the Fourth Proportional to 257,814.10, 386,628.49 and 89,289.06
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Solution
The fourth proportional to 257,814.10, 386,628.49 and 89,289.06 is: 133,901.50
Step by Step Solution
- Step 1: Write the proportion equation
257,814.10 : 386,628.49 = 89,289.06 : x - Step 2: Convert to fraction form
257,814.10/386,628.49 = 89,289.06/x - Step 3: Cross multiply
257,814.10x = 386,628.49 × 89,289.06 - Step 4: Simplify right side
257,814.10x = 34,521,694,441.32 - Step 5: Solve for x
x = 34,521,694,441.32/257,814.10 - Step 6: Final answer
x = 133,901.50
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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.