Finding the Fourth Proportional to 289,291.19, 399,128.98 and 187,394.76
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Solution
The fourth proportional to 289,291.19, 399,128.98 and 187,394.76 is: 258,544.62
Step by Step Solution
- Step 1: Write the proportion equation
289,291.19 : 399,128.98 = 187,394.76 : x - Step 2: Convert to fraction form
289,291.19/399,128.98 = 187,394.76/x - Step 3: Cross multiply
289,291.19x = 399,128.98 × 187,394.76 - Step 4: Simplify right side
289,291.19x = 74,794,679,416.14 - Step 5: Solve for x
x = 74,794,679,416.14/289,291.19 - Step 6: Final answer
x = 258,544.62
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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.