Finding the Fourth Proportional to 212,624.73, 318,948.57 and 86,246.10
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Solution
The fourth proportional to 212,624.73, 318,948.57 and 86,246.10 is: 129,373.80
Step by Step Solution
- Step 1: Write the proportion equation
212,624.73 : 318,948.57 = 86,246.10 : x - Step 2: Convert to fraction form
212,624.73/318,948.57 = 86,246.10/x - Step 3: Cross multiply
212,624.73x = 318,948.57 × 86,246.10 - Step 4: Simplify right side
212,624.73x = 27,508,070,263.08 - Step 5: Solve for x
x = 27,508,070,263.08/212,624.73 - Step 6: Final answer
x = 129,373.80
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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.