Finding the Fourth Proportional to 312,990.08, 431,931.84 and 169,754.88
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Solution
The fourth proportional to 312,990.08, 431,931.84 and 169,754.88 is: 234,264.73
Step by Step Solution
- Step 1: Write the proportion equation
312,990.08 : 431,931.84 = 169,754.88 : x - Step 2: Convert to fraction form
312,990.08/431,931.84 = 169,754.88/x - Step 3: Cross multiply
312,990.08x = 431,931.84 × 169,754.88 - Step 4: Simplify right side
312,990.08x = 73,322,537,667.38 - Step 5: Solve for x
x = 73,322,537,667.38/312,990.08 - Step 6: Final answer
x = 234,264.73
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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.