Finding the Fourth Proportional to 257,461.65, 386,217.41 and 79,920.99
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Solution
The fourth proportional to 257,461.65, 386,217.41 and 79,920.99 is: 119,889.23
Step by Step Solution
- Step 1: Write the proportion equation
257,461.65 : 386,217.41 = 79,920.99 : x - Step 2: Convert to fraction form
257,461.65/386,217.41 = 79,920.99/x - Step 3: Cross multiply
257,461.65x = 386,217.41 × 79,920.99 - Step 4: Simplify right side
257,461.65x = 30,866,877,762.44 - Step 5: Solve for x
x = 30,866,877,762.44/257,461.65 - Step 6: Final answer
x = 119,889.23
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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.