Finding the Fourth Proportional to 407,572.20, 611,115.30 and 249,913.80
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Solution
The fourth proportional to 407,572.20, 611,115.30 and 249,913.80 is: 374,721.70
Step by Step Solution
- Step 1: Write the proportion equation
407,572.20 : 611,115.30 = 249,913.80 : x - Step 2: Convert to fraction form
407,572.20/611,115.30 = 249,913.80/x - Step 3: Cross multiply
407,572.20x = 611,115.30 × 249,913.80 - Step 4: Simplify right side
407,572.20x = 152,726,146,861.14 - Step 5: Solve for x
x = 152,726,146,861.14/407,572.20 - Step 6: Final answer
x = 374,721.70
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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.