Finding the Fourth Proportional to 661,476.51, 992,121.35 and 212,138.99
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Solution
The fourth proportional to 661,476.51, 992,121.35 and 212,138.99 is: 318,178.52
Step by Step Solution
- Step 1: Write the proportion equation
661,476.51 : 992,121.35 = 212,138.99 : x - Step 2: Convert to fraction form
661,476.51/992,121.35 = 212,138.99/x - Step 3: Cross multiply
661,476.51x = 992,121.35 × 212,138.99 - Step 4: Simplify right side
661,476.51x = 210,467,620,085.74 - Step 5: Solve for x
x = 210,467,620,085.74/661,476.51 - Step 6: Final answer
x = 318,178.52
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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.