Finding the Fourth Proportional to 381,664.80, 572,715.90 and 145,177.20
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Solution
The fourth proportional to 381,664.80, 572,715.90 and 145,177.20 is: 217,848.99
Step by Step Solution
- Step 1: Write the proportion equation
381,664.80 : 572,715.90 = 145,177.20 : x - Step 2: Convert to fraction form
381,664.80/572,715.90 = 145,177.20/x - Step 3: Cross multiply
381,664.80x = 572,715.90 × 145,177.20 - Step 4: Simplify right side
381,664.80x = 83,145,290,757.48 - Step 5: Solve for x
x = 83,145,290,757.48/381,664.80 - Step 6: Final answer
x = 217,848.99
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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.