Finding the Fourth Proportional to 386,097.68, 578,358.12 and 198,715.52
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Solution
The fourth proportional to 386,097.68, 578,358.12 and 198,715.52 is: 297,667.51
Step by Step Solution
- Step 1: Write the proportion equation
386,097.68 : 578,358.12 = 198,715.52 : x - Step 2: Convert to fraction form
386,097.68/578,358.12 = 198,715.52/x - Step 3: Cross multiply
386,097.68x = 578,358.12 × 198,715.52 - Step 4: Simplify right side
386,097.68x = 114,928,734,562.02 - Step 5: Solve for x
x = 114,928,734,562.02/386,097.68 - Step 6: Final answer
x = 297,667.51
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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.