Finding the Fourth Proportional to 386,315.18, 579,718.80 and 226,390.80
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Solution
The fourth proportional to 386,315.18, 579,718.80 and 226,390.80 is: 339,730.38
Step by Step Solution
- Step 1: Write the proportion equation
386,315.18 : 579,718.80 = 226,390.80 : x - Step 2: Convert to fraction form
386,315.18/579,718.80 = 226,390.80/x - Step 3: Cross multiply
386,315.18x = 579,718.80 × 226,390.80 - Step 4: Simplify right side
386,315.18x = 131,243,002,907.04 - Step 5: Solve for x
x = 131,243,002,907.04/386,315.18 - Step 6: Final answer
x = 339,730.38
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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.