Finding the Fourth Proportional to 371,909.88, 513,224.91 and 210,780.09
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Solution
The fourth proportional to 371,909.88, 513,224.91 and 210,780.09 is: 290,870.45
Step by Step Solution
- Step 1: Write the proportion equation
371,909.88 : 513,224.91 = 210,780.09 : x - Step 2: Convert to fraction form
371,909.88/513,224.91 = 210,780.09/x - Step 3: Cross multiply
371,909.88x = 513,224.91 × 210,780.09 - Step 4: Simplify right side
371,909.88x = 108,177,592,720.04 - Step 5: Solve for x
x = 108,177,592,720.04/371,909.88 - Step 6: Final answer
x = 290,870.45
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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.