Finding the Fourth Proportional to 391,139.20, 586,708.80 and 302,565.70
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Solution
The fourth proportional to 391,139.20, 586,708.80 and 302,565.70 is: 453,848.55
Step by Step Solution
- Step 1: Write the proportion equation
391,139.20 : 586,708.80 = 302,565.70 : x - Step 2: Convert to fraction form
391,139.20/586,708.80 = 302,565.70/x - Step 3: Cross multiply
391,139.20x = 586,708.80 × 302,565.70 - Step 4: Simplify right side
391,139.20x = 177,517,958,768.16 - Step 5: Solve for x
x = 177,517,958,768.16/391,139.20 - Step 6: Final answer
x = 453,848.55
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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.