Finding the Fourth Proportional to 391,424.99, 540,157.28 and 230,290.40
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Solution
The fourth proportional to 391,424.99, 540,157.28 and 230,290.40 is: 317,795.34
Step by Step Solution
- Step 1: Write the proportion equation
391,424.99 : 540,157.28 = 230,290.40 : x - Step 2: Convert to fraction form
391,424.99/540,157.28 = 230,290.40/x - Step 3: Cross multiply
391,424.99x = 540,157.28 × 230,290.40 - Step 4: Simplify right side
391,424.99x = 124,393,036,273.05 - Step 5: Solve for x
x = 124,393,036,273.05/391,424.99 - Step 6: Final answer
x = 317,795.34
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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.