Finding the Fourth Proportional to 381,374.13, 572,143.20 and 128,660.88
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Solution
The fourth proportional to 381,374.13, 572,143.20 and 128,660.88 is: 193,018.99
Step by Step Solution
- Step 1: Write the proportion equation
381,374.13 : 572,143.20 = 128,660.88 : x - Step 2: Convert to fraction form
381,374.13/572,143.20 = 128,660.88/x - Step 3: Cross multiply
381,374.13x = 572,143.20 × 128,660.88 - Step 4: Simplify right side
381,374.13x = 73,612,447,598.02 - Step 5: Solve for x
x = 73,612,447,598.02/381,374.13 - Step 6: Final answer
x = 193,018.99
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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.