Finding the Fourth Proportional to 312,990.08, 431,926.80 and 169,750.23
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Solution
The fourth proportional to 312,990.08, 431,926.80 and 169,750.23 is: 234,255.59
Step by Step Solution
- Step 1: Write the proportion equation
312,990.08 : 431,926.80 = 169,750.23 : x - Step 2: Convert to fraction form
312,990.08/431,926.80 = 169,750.23/x - Step 3: Cross multiply
312,990.08x = 431,926.80 × 169,750.23 - Step 4: Simplify right side
312,990.08x = 73,319,675,248.73 - Step 5: Solve for x
x = 73,319,675,248.73/312,990.08 - Step 6: Final answer
x = 234,255.59
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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.