Finding the Fourth Proportional to 272,907.84, 409,219.20 and 85,869.12
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Solution
The fourth proportional to 272,907.84, 409,219.20 and 85,869.12 is: 128,758.82
Step by Step Solution
- Step 1: Write the proportion equation
272,907.84 : 409,219.20 = 85,869.12 : x - Step 2: Convert to fraction form
272,907.84/409,219.20 = 85,869.12/x - Step 3: Cross multiply
272,907.84x = 409,219.20 × 85,869.12 - Step 4: Simplify right side
272,907.84x = 35,139,292,591.10 - Step 5: Solve for x
x = 35,139,292,591.10/272,907.84 - Step 6: Final answer
x = 128,758.82
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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.