Finding the Fourth Proportional to 407,266.20, 611,288.10 and 207,811.80
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Solution
The fourth proportional to 407,266.20, 611,288.10 and 207,811.80 is: 311,916.09
Step by Step Solution
- Step 1: Write the proportion equation
407,266.20 : 611,288.10 = 207,811.80 : x - Step 2: Convert to fraction form
407,266.20/611,288.10 = 207,811.80/x - Step 3: Cross multiply
407,266.20x = 611,288.10 × 207,811.80 - Step 4: Simplify right side
407,266.20x = 127,032,880,379.58 - Step 5: Solve for x
x = 127,032,880,379.58/407,266.20 - Step 6: Final answer
x = 311,916.09
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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.