Finding the Fourth Proportional to 257,209.68, 355,042.44 and 209,379.99
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Solution
The fourth proportional to 257,209.68, 355,042.44 and 209,379.99 is: 289,020.16
Step by Step Solution
- Step 1: Write the proportion equation
257,209.68 : 355,042.44 = 209,379.99 : x - Step 2: Convert to fraction form
257,209.68/355,042.44 = 209,379.99/x - Step 3: Cross multiply
257,209.68x = 355,042.44 × 209,379.99 - Step 4: Simplify right side
257,209.68x = 74,338,782,536.78 - Step 5: Solve for x
x = 74,338,782,536.78/257,209.68 - Step 6: Final answer
x = 289,020.16
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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.