Finding the Fourth Proportional to 386,719.65, 579,940.49 and 133,932.08
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Solution
The fourth proportional to 386,719.65, 579,940.49 and 133,932.08 is: 200,849.99
Step by Step Solution
- Step 1: Write the proportion equation
386,719.65 : 579,940.49 = 133,932.08 : x - Step 2: Convert to fraction form
386,719.65/579,940.49 = 133,932.08/x - Step 3: Cross multiply
386,719.65x = 579,940.49 × 133,932.08 - Step 4: Simplify right side
386,719.65x = 77,672,637,886.60 - Step 5: Solve for x
x = 77,672,637,886.60/386,719.65 - Step 6: Final answer
x = 200,849.99
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.