Finding the Fourth Proportional to 207,428.18, 286,286.63 and 120,201.05
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Solution
The fourth proportional to 207,428.18, 286,286.63 and 120,201.05 is: 165,898.17
Step by Step Solution
- Step 1: Write the proportion equation
207,428.18 : 286,286.63 = 120,201.05 : x - Step 2: Convert to fraction form
207,428.18/286,286.63 = 120,201.05/x - Step 3: Cross multiply
207,428.18x = 286,286.63 × 120,201.05 - Step 4: Simplify right side
207,428.18x = 34,411,953,641.67 - Step 5: Solve for x
x = 34,411,953,641.67/207,428.18 - Step 6: Final answer
x = 165,898.17
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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.