Finding the Fourth Proportional to 535,271.68, 738,649.92 and 308,990.08
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Solution
The fourth proportional to 535,271.68, 738,649.92 and 308,990.08 is: 426,391.88
Step by Step Solution
- Step 1: Write the proportion equation
535,271.68 : 738,649.92 = 308,990.08 : x - Step 2: Convert to fraction form
535,271.68/738,649.92 = 308,990.08/x - Step 3: Cross multiply
535,271.68x = 738,649.92 × 308,990.08 - Step 4: Simplify right side
535,271.68x = 228,235,497,872.79 - Step 5: Solve for x
x = 228,235,497,872.79/535,271.68 - Step 6: Final answer
x = 426,391.88
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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.