Finding the Fourth Proportional to 257,069.20, 385,460.76 and 79,526.80
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Solution
The fourth proportional to 257,069.20, 385,460.76 and 79,526.80 is: 119,245.95
Step by Step Solution
- Step 1: Write the proportion equation
257,069.20 : 385,460.76 = 79,526.80 : x - Step 2: Convert to fraction form
257,069.20/385,460.76 = 79,526.80/x - Step 3: Cross multiply
257,069.20x = 385,460.76 × 79,526.80 - Step 4: Simplify right side
257,069.20x = 30,654,460,768.37 - Step 5: Solve for x
x = 30,654,460,768.37/257,069.20 - Step 6: Final answer
x = 119,245.95
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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.