Finding the Fourth Proportional to 381,202.86, 571,658.96 and 128,415.54
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Solution
The fourth proportional to 381,202.86, 571,658.96 and 128,415.54 is: 192,574.35
Step by Step Solution
- Step 1: Write the proportion equation
381,202.86 : 571,658.96 = 128,415.54 : x - Step 2: Convert to fraction form
381,202.86/571,658.96 = 128,415.54/x - Step 3: Cross multiply
381,202.86x = 571,658.96 × 128,415.54 - Step 4: Simplify right side
381,202.86x = 73,409,894,044.24 - Step 5: Solve for x
x = 73,409,894,044.24/381,202.86 - Step 6: Final answer
x = 192,574.35
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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.