Finding the Fourth Proportional to 391,260.66, 586,890.99 and 213,670.80
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Solution
The fourth proportional to 391,260.66, 586,890.99 and 213,670.80 is: 320,506.20
Step by Step Solution
- Step 1: Write the proportion equation
391,260.66 : 586,890.99 = 213,670.80 : x - Step 2: Convert to fraction form
391,260.66/586,890.99 = 213,670.80/x - Step 3: Cross multiply
391,260.66x = 586,890.99 × 213,670.80 - Step 4: Simplify right side
391,260.66x = 125,401,467,346.09 - Step 5: Solve for x
x = 125,401,467,346.09/391,260.66 - Step 6: Final answer
x = 320,506.20
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1.5x scale
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.