Finding the Fourth Proportional to 391,177.21, 586,857.35 and 121,291.15
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Solution
The fourth proportional to 391,177.21, 586,857.35 and 121,291.15 is: 181,965.11
Step by Step Solution
- Step 1: Write the proportion equation
391,177.21 : 586,857.35 = 121,291.15 : x - Step 2: Convert to fraction form
391,177.21/586,857.35 = 121,291.15/x - Step 3: Cross multiply
391,177.21x = 586,857.35 × 121,291.15 - Step 4: Simplify right side
391,177.21x = 71,180,602,867.45 - Step 5: Solve for x
x = 71,180,602,867.45/391,177.21 - Step 6: Final answer
x = 181,965.11
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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.