Finding the Fourth Proportional to 527,438.68, 791,147.08 and 128,081.54
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Solution
The fourth proportional to 527,438.68, 791,147.08 and 128,081.54 is: 192,119.65
Step by Step Solution
- Step 1: Write the proportion equation
527,438.68 : 791,147.08 = 128,081.54 : x - Step 2: Convert to fraction form
527,438.68/791,147.08 = 128,081.54/x - Step 3: Cross multiply
527,438.68x = 791,147.08 × 128,081.54 - Step 4: Simplify right side
527,438.68x = 101,331,336,372.90 - Step 5: Solve for x
x = 101,331,336,372.90/527,438.68 - Step 6: Final answer
x = 192,119.65
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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.