Finding the Fourth Proportional to 257,210.68, 355,043.82 and 209,380.99
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Solution
The fourth proportional to 257,210.68, 355,043.82 and 209,380.99 is: 289,021.54
Step by Step Solution
- Step 1: Write the proportion equation
257,210.68 : 355,043.82 = 209,380.99 : x - Step 2: Convert to fraction form
257,210.68/355,043.82 = 209,380.99/x - Step 3: Cross multiply
257,210.68x = 355,043.82 × 209,380.99 - Step 4: Simplify right side
257,210.68x = 74,339,426,524.98 - Step 5: Solve for x
x = 74,339,426,524.98/257,210.68 - Step 6: Final answer
x = 289,021.54
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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.