Finding the Fourth Proportional to 431,237.20, 646,855.80 and 369,029.20
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Solution
The fourth proportional to 431,237.20, 646,855.80 and 369,029.20 is: 553,543.80
Step by Step Solution
- Step 1: Write the proportion equation
431,237.20 : 646,855.80 = 369,029.20 : x - Step 2: Convert to fraction form
431,237.20/646,855.80 = 369,029.20/x - Step 3: Cross multiply
431,237.20x = 646,855.80 × 369,029.20 - Step 4: Simplify right side
431,237.20x = 238,708,678,389.36 - Step 5: Solve for x
x = 238,708,678,389.36/431,237.20 - Step 6: Final answer
x = 553,543.80
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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.