Finding the Fourth Proportional to 389,769.76, 537,884.04 and 210,921.76
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Solution
The fourth proportional to 389,769.76, 537,884.04 and 210,921.76 is: 291,072.99
Step by Step Solution
- Step 1: Write the proportion equation
389,769.76 : 537,884.04 = 210,921.76 : x - Step 2: Convert to fraction form
389,769.76/537,884.04 = 210,921.76/x - Step 3: Cross multiply
389,769.76x = 537,884.04 × 210,921.76 - Step 4: Simplify right side
389,769.76x = 113,451,448,392.71 - Step 5: Solve for x
x = 113,451,448,392.71/389,769.76 - Step 6: Final answer
x = 291,072.99
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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.