Finding the Fourth Proportional to 381,979.62, 527,130.11 and 209,908.28
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Solution
The fourth proportional to 381,979.62, 527,130.11 and 209,908.28 is: 289,672.46
Step by Step Solution
- Step 1: Write the proportion equation
381,979.62 : 527,130.11 = 209,908.28 : x - Step 2: Convert to fraction form
381,979.62/527,130.11 = 209,908.28/x - Step 3: Cross multiply
381,979.62x = 527,130.11 × 209,908.28 - Step 4: Simplify right side
381,979.62x = 110,648,974,726.31 - Step 5: Solve for x
x = 110,648,974,726.31/381,979.62 - Step 6: Final answer
x = 289,672.46
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.