Finding the Fourth Proportional to 391,463.82, 540,187.08 and 217,038.68
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Solution
The fourth proportional to 391,463.82, 540,187.08 and 217,038.68 is: 299,495.09
Step by Step Solution
- Step 1: Write the proportion equation
391,463.82 : 540,187.08 = 217,038.68 : x - Step 2: Convert to fraction form
391,463.82/540,187.08 = 217,038.68/x - Step 3: Cross multiply
391,463.82x = 540,187.08 × 217,038.68 - Step 4: Simplify right side
391,463.82x = 117,241,490,796.25 - Step 5: Solve for x
x = 117,241,490,796.25/391,463.82 - Step 6: Final answer
x = 299,495.09
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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.