Finding the Fourth Proportional to 391,115.14, 539,743.08 and 240,212.14
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Solution
The fourth proportional to 391,115.14, 539,743.08 and 240,212.14 is: 331,495.32
Step by Step Solution
- Step 1: Write the proportion equation
391,115.14 : 539,743.08 = 240,212.14 : x - Step 2: Convert to fraction form
391,115.14/539,743.08 = 240,212.14/x - Step 3: Cross multiply
391,115.14x = 539,743.08 × 240,212.14 - Step 4: Simplify right side
391,115.14x = 129,652,840,296.99 - Step 5: Solve for x
x = 129,652,840,296.99/391,115.14 - Step 6: Final answer
x = 331,495.32
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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.